ABM Reagents

<h2 data-section-id="1h8mvlk" data-start="0" data-end="45">What are primary cell culture medium kits?</h2>
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Primary cell culture medium kits are complete, ready-to-prepare culture systems that combine a cell-type-specific basal medium with the supplements required for optimal growth and maintenance of primary cells. Unlike purchasing media, serum, growth factors, and antibiotics separately, these kits provide all components in validated proportions, ensuring that the medium performs as intended for a specific primary cell type.
A typical kit includes a basal medium, a cell-specific growth supplement, an antibiotic component where appropriate, and fetal bovine serum (FBS) or an equivalent supplement when required. The components are designed to be combined directly according to the manufacturer's instructions, reducing preparation errors and improving consistency between experiments.
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<h2 data-path-to-node="5">What you will find:</h2>
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Tissue-specific primary cell culture medium kits
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Specialized growth media for endothelial and epithelial cells
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Workflow systems for thawing, plating, and maintenance of hepatocytes&nbsp;
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Differentiation media for progenitor and stem cells&nbsp;
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Serum-free bioprocessing and cryopreservation reagents
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Targeted fibroblast, smooth muscle, and myocyte growth kits
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<h2 data-section-id="1nip7jz" data-start="1066" data-end="1116">How to choose a primary cell culture medium kit</h2>
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Match the kit to the cell type
Primary cells have highly specialized nutritional and signaling requirements. Kits are available for endothelial cells, hepatocytes, astrocytes, epithelial cells, fibroblasts, stem cells, and many other cell types. Selecting a kit specifically designed for the target cell type is essential for maintaining normal cellular function and morphology.
Serum-containing vs. serum-free formulations
Traditional kits often include FBS as a source of growth factors and nutrients. Serum-free and xeno-free kits replace animal-derived components with defined supplements, reducing variability and supporting applications that require animal-component-free culture conditions.
Complete kit convenience
Most kits provide all major components needed to prepare complete culture medium. This eliminates the need to source multiple reagents individually and helps ensure that supplements are used at the correct concentrations.
Antibiotic inclusion
Many primary cell culture kits include antibiotics to reduce contamination risk during routine culture. However, some specialized formulations, particularly those designed for immune cells and mononuclear cells, are intentionally supplied without antibiotics because these additives can influence cellular responses and experimental outcomes.
Storage and preparation
Kit components are typically stored separately until needed. Basal media and supplements are usually refrigerated, while serum components may require frozen storage before use. Once mixed into complete medium, shelf life is generally shorter than that of the individual components, making it advisable to prepare only the amount needed for near-term use.
Specialized differentiation systems
Some kits are designed not only for maintenance but also for cellular differentiation. These systems may include multiple supplements added sequentially throughout a protocol to guide stem cells or progenitor cells through defined developmental stages.
<h2 data-section-id="dydsco" data-start="3131" data-end="3173">&nbsp;</h2>
<h2 data-section-id="1fljvas" data-start="4061" data-end="4086">Specifications context</h2>
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Primary cell culture medium kits are commonly supplied in a format consisting of a basal medium bottle accompanied by concentrated supplements and serum components that are added directly before use. This approach simplifies preparation while ensuring that all components have been optimized and tested together.
<a href="https://mbpinc.net/contact-us" title="Contact the expert team at MBP">Contact the expert team at MBP</a> today and get optimized primary cell culture medium kits for your lab.

Primary Cell Culture Medium kits

Flyer

Smooth Muscle Medium Kit

TM041 by Applied Biological Materials is the Smooth Muscle Medium Kit — a low-serum, antibiotic-free cell culture kit (500 mL basal + supplement) specifically formulated to maintain smooth muscle cell morphology and marker expression, with lot-tested sterility, pH, osmolality, endotoxin, and cell performance.

Unit Quantity

Sterility

Appearance

Storage Condition

Disclaimer

Shipping Condition

<h2>What is Chemicals as a reagent category?</h2>
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Chemicals covers the broad range of chemical and biochemical reagents used across molecular biology, cell biology, biochemistry, and general laboratory work: biochemically relevant compounds like vitamins, buffer salts, amino acids, and enzyme substrates; general laboratory chemicals including solvents, acids, bases, and inorganic salts; and research-grade specialty chemicals for specific applications. Unlike application-specific categories such as Epigenetics or Electrophoresis, which organize reagents by research workflow, Chemicals organizes by the nature of the material itself.
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<h2 dir="ltr">What you'll Discover:</h2>
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<a href="https://mbpinc.net/reagents/chemicals/biochemical-reagents" title="Biochemical Reagents:">Biochemical Reagents:</a> High-quality metabolic inducers such as IPTG (G116), L-Arabinose (A2001-ZYM), and Cumate (CH065), along with essential buffers and enzyme stabilizers like TRIS (CH059), DTT (G025), and PMSF (G034).
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<a href="https://mbpinc.net/reagents/chemicals/inorganic-reagents-and-compounds" title="Inorganic Reagents &amp; Compounds:">Inorganic Reagents &amp; Compounds:</a> Ultra-pure essential chemical substances like Sodium Azide (CH052) designed for accurate laboratory buffer enhancement and sample conservation methodologies.
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<a href="https://mbpinc.net/reagents/chemicals/detergents-and-surfactants" title="Detergents &amp; Surfactants:">Detergents &amp; Surfactants:</a> Enhanced cell lysis and denaturing agents featuring 20% SDS (CH100) and concentrated 10X Tris-Glycine-SDS Buffer (CH125) for protein electrophoresis setup.
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</ul>
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<h2>How to navigate Chemicals</h2>
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Start with Biochemical Reagents for biologically relevant compounds
Biochemical Reagents covers the subset of the catalog most relevant to molecular and cell biology workflows: vitamins and cofactors, buffer salts and ready-to-use buffer solutions, amino acids, and other compounds with specific roles in biological systems.
Check purity grade requirements before ordering a research chemical
Research-grade chemicals vary in purity from technical grade to ACS-certified, HPLC-grade, and molecular biology grade, with the appropriate grade depending on how the chemical is used; cell culture and enzymatic applications generally require higher purity than non-biological analytical or general lab use.
Confirm whether your chemical needs are better served by a specialty category
Some research chemicals belong more naturally in application-specific sections of the catalog, such as chromatin immunoprecipitation buffers in Epigenetics or gel running buffers in Electrophoresis, while general-purpose chemicals and biochemical reagents not tied to a single workflow type belong in this Chemicals branch.
Consider bulk ordering for high-consumption research chemicals
Common research chemicals like buffer salts, solvents, and vitamins are used in large quantities by active research labs, and bulk pricing can represent meaningful savings on frequently replenished reagents.
Look for certificates of analysis when accuracy matters for your application
Quantitative applications, including analytical standards, enzyme kinetics studies, and defined cell culture supplementation, require chemicals with documented lot-specific purity and concentration, typically confirmed by certificate of analysis provided with each lot.
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<h2>Specifications context</h2>
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Research-grade purity designations for laboratory chemicals follow widely adopted convention systems including ACS grade (meets American Chemical Society purity specifications), HPLC grade (verified purity for chromatographic applications), and molecular biology grade (certified free from nuclease, protease, and other activities that would interfere with molecular biology applications). As of 2026, pre-made, ready-to-use solutions for common biochemical reagents like PBS, HEPES buffer, and Tris-HCl continue to see growing adoption over powder or concentrated formats in labs prioritizing convenience and reproducibility over reagent cost per use.
<a href="https://mbpinc.net/contact-us">Reach out to the friendly team at MBP</a> now to get a quote for your particular research needs.

Chemicals

MSDS

Sodium Azide

Sodium Azide CH052 — 250 g solid antimicrobial preservative for buffers, antibody solutions, and immunoassay reagents. Inhibits cytochrome oxidase and HRP. Store at room temperature or below, under dry conditions. Handle with appropriate PPE.

Shipping condition

<h2 data-section-id="3d1466" data-start="0" data-end="47">What are cell culture buffers and solutions?</h2>
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Cell culture buffers and balanced salt solutions are isotonic solutions used to wash, dilute, transport, and temporarily maintain cells outside of complete growth media. Unlike culture media, these solutions do not contain the nutrients and growth factors required for cell proliferation. Instead, their primary role is to maintain physiological pH and osmotic balance while protecting cells from stress during handling and experimental procedures.
The most commonly used cell culture buffers include PBS (Phosphate-Buffered Saline), DPBS (Dulbecco's Phosphate-Buffered Saline), HBSS (Hank's Balanced Salt Solution), and EBSS (Earle's Balanced Salt Solution). These solutions are widely used in cell washing, passaging, tissue dissociation, sample preparation, immunoassays, and short-term cell maintenance.
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<h2 dir="ltr">What you will find:</h2>
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<ul>
<li dir="ltr" role="presentation">Standard Isotonic Buffers to wash cells, maintain osmotic balance, and dilute reagents.</li>
<li dir="ltr" role="presentation">Biological Buffering Agents for metabolic support and pH maintenance.</li>
<li dir="ltr" role="presentation">Cell Dissociation &amp; Neutralizing Reagents maintain high cell viability and are used for cell recovery, detachment, and passaging</li>
<li dir="ltr" role="presentation">Surface Coating &amp; Matrix Solutions with high-grade gelatin for improved cell attachment.</li>
<li dir="ltr" role="presentation">Insulin-Transferrin-Selenite (ITS), Bovine Serum Albumin (BSA), and high-purity Holo-Transferrin for enhanced cell growth and viability</li>
</ul>
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<h2 data-section-id="1cuz7jf" data-start="1165" data-end="1216">How to choose cell culture buffers and solutions</h2>
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PBS vs. DPBS PBS is a simple sodium chloride/phosphate buffer solution. DPBS adds potassium chloride and may include calcium, magnesium, glucose, and pyruvate depending on formulation. The practical difference between PBS and DPBS formulations is minimal &mdash; both maintain pH 7.2-7.4 and osmolality ~280-315 mOsm/kg and are functionally interchangeable for standard washing, immunoassay, and sample preparation applications. If your protocol is sensitive to minor salt concentration differences, compare specific formulation sheets rather than assuming equivalence. &nbsp; Calcium/magnesium-free vs. calcium/magnesium-containing Calcium and magnesium facilitate cell-cell and cell-surface adhesion. Calcium/magnesium-free PBS, DPBS, or HBSS is required: before enzymatic dissociation (residual Ca/Mg inhibits trypsin, requiring more enzyme and harsher conditions &mdash; the most common cause of poor trypsinization results), for rinsing EDTA or other chelators from culture, and for minimizing cell-cell aggregation during gentle dissociation or suspension recovery. Calcium/magnesium-containing formulations support cell binding and clumping, useful for transport applications or attachment-dependent procedures. &nbsp; HBSS/EBSS vs. PBS/DPBS for short-term maintenance HBSS and EBSS include sodium bicarbonate buffering and may include glucose, providing meaningfully better short-term physiological support for cells &mdash; particularly under CO₂ atmosphere &mdash; than the simpler PBS/DPBS formulations. Use HBSS/EBSS when cells need to remain viable for a meaningful period outside complete growth media (tissue dissociation workflows, transport, short-term holding). Use PBS/DPBS for washing steps, immunoassay/Western blot dilutions, and sample preparation where osmotic balance &mdash; not metabolic support &mdash; is the requirement. &nbsp; Phenol red and glucose/pyruvate variants DPBS and HBSS are available with or without phenol red and with or without glucose/pyruvate, allowing matching to downstream applications (phenol red-free for fluorescence work; glucose/pyruvate-containing for short-term metabolic support). &nbsp; Endotoxin and quality testing Regular quality testing of balanced salt solutions includes osmolality, pH, stability, and screening for endotoxins and bacterial/fungal contamination. For immune cell handling and other endotoxin-sensitive applications, premium formulations document endotoxin levels below 0.005 EU/mL &mdash; a meaningfully tighter specification than standard research-grade buffers. &nbsp; Powder vs. liquid format Powdered balanced salt solutions are manufactured without sodium (to avoid sodium bicarbonate off-gassing during storage), requiring sodium bicarbonate addition, pH adjustment, and sterile filtration at time of preparation &mdash; following the same principle as powdered classic media.Specifications context
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<h2>Specifications context</h2>
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Most balanced salt solutions are formulated to maintain physiological conditions with a pH of approximately 7.2&ndash;7.4 and osmolality ranging from about 280&ndash;315 mOsm/kg. These properties help minimize osmotic stress and maintain cell viability during handling.
Calcium- and magnesium-free DPBS remains one of the most commonly specified buffers for cell dissociation workflows because it improves the effectiveness of trypsin and other detachment enzymes. HBSS and EBSS continue to be widely used when short-term metabolic support is required outside complete growth media.
<a href="https://mbpinc.net/contact-us">Contact the expert team</a> at MBP today to get high-purity buffers and solutions for your lab.

Buffers & Solutions

Buffers/Salts

Sodium Pyruvate Solution (100mM)

Sodium Pyruvate Solution 100 mM (TM057) by Applied Biological Materials is a 100 ml sterile liquid supplement providing an exogenous carbon source for in vitro cell culture, supporting amino acid metabolism and Krebs cycle initiation. Lot-tested for sterility, pH, osmolality, and endotoxin. Store at 2–8°C.

<h2 dir="ltr">What Are Specialized Cloning Vectors &amp; Viral Tools?</h2>
 Standard lentiviral and retroviral expression vectors meet the needs of most overexpression and knockdown workflows, but many cell biology and translational research questions demand purpose-engineered constructs with specialised functions &mdash; subcellular localisation, multi-gene co-expression, or conditional activation. Select the format best suited to your experimental requirements.
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<h2 dir="ltr">What you will find:</h2>
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<ul>
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<a href="https://mbpinc.net/reagents/dna/cloning-services-products/specialized-cloning-vectors/-virus/organelle-labeling-viruses">Organelle Labeling Viruses: </a>for live-cell visualization and functional pathway analysis of cellular structures in mammalian systems
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Targeted fluorescent labeling of specific cellular structures using viral delivery.
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Stable expression of organelle-specific markers for long-term live-cell imaging.
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Compatible with fluorescence microscopy for dynamic cellular imaging applications.
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<li data-section-id="8k7pm2" data-start="506" data-end="603" data-is-last-node="">Suitable for studying organelle organization, transport, and cellular function in living cells.</li>
</ul>
<h2 dir="ltr"> How to Choose Specialized Cloning Vectors</h2>
 Subcellular Targeting Needs Organelle-targeted fluorescent labeling lentiviral particles deliver fluorescent protein constructs targeting mitochondria, endoplasmic reticulum, nucleus, Golgi, lysosome, peroxisome, plasma membrane, autophagosome, and cytoskeleton &mdash; providing a stable alternative to chemical dyes for live-cell imaging. Multi-Gene Co-Expression Bicistronic vectors using IRES or 2A self-cleaving peptide sequences enable co-expression of two genes (e.g., a gene of interest and a fluorescent marker) from a single transcript or vector. Conditional Expression Requirements Conditional DIO/FLEX vectors restrict transgene expression to Cre-expressing cells, essential for circuit-specific neuroscience research and in vivo conditional gene expression studies. Temporal Control Needs Inducible constructs (Tet-On/Tet-Off systems) provide doxycycline-regulated transgene activation for experiments requiring temporal control over expression timing. Delivery Format Most specialised constructs are available as lentiviral particles for stable, long-term expression in both dividing and non-dividing cell types, including primary cells and in vivo models. 
<h2 dir="ltr"> Specifications Context</h2>
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Traditional subcellular organelle imaging relies on chemical dyes (e.g., MitoTracker, LysoTracker, ER-Tracker) or antibody-based immunofluorescence in fixed cells; however, chemical dyes are transient and may exhibit cytotoxicity at working concentrations, while antibody-based methods are limited to endpoint imaging. Viral organelle-targeted fluorescent expression systems enable stable, genetically encoded labeling for long-term live-cell imaging and dynamic subcellular tracking. These constructs are supplied in plasmid DNA and pre-packaged viral formats and support applications including organelle dynamics, trafficking studies, and multicolor imaging workflows. Specialized cloning vectors and viral tools are sourced from established manufacturers, including Applied Biological Materials (ABM), and product availability reflects MBP&rsquo;s catalogue as of mid-2026.
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<a href="https://mbpinc.net/contact-us" style="color: #236fa1;">Contact the MBP team </a>today and get specialized cloning vectors for your lab.

Specialized Cloning Vectors/ Viruses

Specialized Cloning Vectors/ Virus

Sox2 Adenovirus (Human)

000691A by Applied Biological Materials is a pre-packaged adenovirus (750 µl in 10 mM Tris-HCl, pH 8.0) expressing human SOX2 — a master pluripotency transcription factor and Yamanaka reprogramming factor. Non-integrating transient SOX2 delivery across mammalian cell types. For integration-free reprogramming, neural/cancer stem cell SOX2 overexpression, and adenovirus amplification via HEK293. Store at &minus;80°C.

Vector

Note

Spectinomycin dihydrochloride

Spectinomycin Dihydrochloride G442 — 50 mg/ml ready-to-use solution (1.0 ml). Aminocyclitol antibiotic for selection of aadA-resistant bacterial strains and plant transformation. Store at −20 °C, away from light, for up to one year.

Concentration

<h2 dir="ltr"> What Are Lentiviral Purification &amp; Packaging Kits?</h2>
 Producing high-quality lentiviral stocks is a prerequisite for reproducible transduction experiments. Low-titer or impure virus preparations reduce transduction efficiency, introduce toxicity from residual cell debris, and compromise experimental reproducibility. Purification and packaging kits address every step from plasmid transfection through virus harvest and concentration. Vector production quality depends on efficient purification and packaging workflows. Choose the kit designed for your system.
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<h2 dir="ltr">What you will find:</h2>
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2nd and 3rd Generation Lentivirus Bundles combining transduction enhancers, transfection reagents, packaging mix, titer kits for complete workflows
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<li dir="ltr" style="font-family: arial, helvetica, sans-serif; color: #000000;" aria-level="1">
2nd and 3rd Generation Packaging System Mix for standardized viral production workflows
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<li dir="ltr" style="font-family: arial, helvetica, sans-serif; color: #000000;" aria-level="1">
DNAfectin&trade; Plus and Packaging Mix systems for enhanced transfection workflows
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<li dir="ltr" style="font-family: arial, helvetica, sans-serif; color: #000000;" aria-level="1">
Lentivirus Promoter Blast&trade; Kit for lentiviral expression studies driven by promoters
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<li dir="ltr" style="font-family: arial, helvetica, sans-serif; color: #000000;" aria-level="1">
SARS-CoV-2 S Protein Pseudotype Lentiviral Packaging Mix for pseudovirus-based research applications
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<li dir="ltr" style="font-family: arial, helvetica, sans-serif; color: #000000;" aria-level="1">
Ultra-Pure Lentivirus Purification Kit for viral cleanup and concentration
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<li dir="ltr" style="font-family: arial, helvetica, sans-serif; color: #000000;" aria-level="1">
ViralEntry&trade; Transduction Enhancer for improved transduction
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<li dir="ltr" style="font-family: arial, helvetica, sans-serif; color: #000000;" aria-level="1">
qPCR Lentivirus Titer Kit &amp; ViralEntry&trade; Bundle for optimized transduction workflows and&nbsp; viral quantification&nbsp;
</li>
</ul>
<h2 dir="ltr"> How to Choose a Purification &amp; Packaging Kit</h2>
 Concentration Method Available PEG precipitation kits work with a standard benchtop centrifuge, producing 10&ndash;100-fold concentration &mdash; the most accessible method for labs without ultracentrifuges. Ultrafiltration (100 kDa cutoff) offers high recovery (&gt;80%) while removing small molecules and unincorporated VSV-G. Ultracentrifugation provides the highest concentration (up to 1000&times;) but requires specialised equipment. Packaging Plasmid Generation 3rd generation systems (pMDLg/pRRE + pRSV-Rev + pVSV-G) split packaging elements across three plasmids and eliminate Tat for biosafety. 2nd generation systems use a single packaging plasmid + pVSV-G; some transfer vectors with RSV promoters produce lower titers with 3rd generation packaging unless using CMV-promoter variants (pLKO.1C). Starting Volume Scale Ultrafiltration units are compatible with both small-scale (&le;20 mL) and large-scale (up to 1 L) starting volumes using appropriately sized membranes. Plasmid Transfection Ratio For 3rd generation packaging, a 4:2:1:1 ratio of transfer vector:pMDLg/pRRE:pVSV-G:pRSV-Rev has been validated to maximise titer, with 20 &micro;g transfer vector per 15 cm dish as a standard starting point. Titer Assessment Method p24 ELISA measures total viral particle content; functional transduction assays (GFP or antibiotic selection) measure infectious titer; qPCR-based RNA titration measures packaged RNA copies. Functional titer is most relevant for transduction experiments. 
<h2 dir="ltr"> Specifications Context</h2>
 Lentiviral concentration workflows commonly combine PEG precipitation, ultrafiltration, or density-gradient methods to increase viral titer without requiring ultracentrifugation. Ultrafiltration systems using 100 kDa membranes efficiently retain lentiviral particles (approximately 80&ndash;120 nm) while removing smaller contaminants and free proteins. Following concentration, viral stocks are typically aliquoted into single-use volumes and stored at &minus;80 &deg;C because infectivity decreases with repeated freeze&ndash;thaw cycles and prolonged storage above freezing temperatures. Modern 2nd- and 3rd-generation packaging systems separate essential viral functions across multiple plasmids, including a dedicated VSV-G envelope plasmid, to support safer lentiviral production workflows. Product availability reflects MBP's catalogue as of mid-2026. 
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<a href="https://mbpinc.net/contact-us">Contact the expert team </a>at MBP Inc. and get reliable lentiviral purification and packaging kits for your lab today.

Purfication & Packaging Kits

DataSheet

Selection-Drug Killing Curve

Lentivector Packaging Protocol

Lentivirus Infection Protocol

Enhanced Lentivirus Safety Features-Replication Incompetency

Suggested MOI for Common Cancer Cell Lines

Lentiviral System FAQ

Speedy Lentivirus Purification

LV999 by Applied Biological Materials is a 100 ml proprietary lentivirus purification reagent that concentrates lentiviral supernatant up to 100-fold without ultracentrifugation, achieving titers up to 107 IU/ml. Optimized for abm's pLenti-combo packaging system. Stored and shipped at ambient temperature. The fastest, equipment-free path from packaging to high-titer lentivirus.

Stellate Growth Medium

Stellate Growth Medium (TM083) by Applied Biological Materials is a 500 ml proprietary sterile ready-to-use medium formulated for in vitro culture of hepatic and pancreatic stellate cells. Lot-tested for sterility, pH, osmolality, and endotoxin. Store at 2–8°C.

Caution

<h2 data-section-id="1go10h8" data-start="173" data-end="215">What are classic cell culture media?</h2>
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Classic cell culture media refers to the foundational basal medium formulations that have underpinned mammalian cell culture since the mid-20th century: DMEM (Dulbecco's Modified Eagle Medium), MEM (Minimum Essential Medium), RPMI 1640, Ham's Nutrient Mixtures F-10 and F-12, IMDM (Iscove's Modified Dulbecco's Medium), and the combination formulation DMEM/F-12. Each is manufactured according to its originally published formula, with modifications limited to those necessary for consistent performance and stability of the medium over its shelf life. These media supply the amino acids, vitamins, glucose, salts, and (in most formulations) phenol red pH indicator that form the nutritional backbone of essentially all subsequent specialty, serum-free, and Advanced media derivatives.
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<h2 dir="ltr">What you will find:</h2>
&nbsp;
<ul>
<li dir="ltr" role="presentation">Selective Mammalian Antibiotics including Puromycin, Geneticin, and Hygromycin B for stable development of cell lines.</li>
<li dir="ltr" role="presentation">Broad-Spectrum Bactericidal Agents for routine contamination prevention, including Penicillin/Streptomycin and Gentamicin&nbsp;</li>
<li dir="ltr" role="presentation">Prokaryotic Selection Reagents for effective bacterial transformation, including Ampicillin, Kanamycin, Chloramphenicol, and Tetracycline&nbsp;</li>
<li dir="ltr" role="presentation">Antifungal and Antimycotic Solutions to maintain sterile cultures, including combined 100X cocktails and Amphotericin B (Fungizone)&nbsp;</li>
<li dir="ltr" role="presentation">Specialized Small Molecules for targeted biochemical assays, including Ganciclovir, Rapamycin, and Actinomycin D&nbsp;</li>
</ul>
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<h2 data-section-id="1mfajxk" data-start="1218" data-end="1252">How to choose a classic medium</h2>
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DMEM vs MEM
DMEM contains up to four times the amino acid and vitamin concentration of original Eagle's MEM, along with higher glucose levels, making it suitable for cell types with elevated nutrient demands &mdash; DMEM is broadly applicable across mammalian, insect, and plant cell phenotypes including primary cells, stem cells, and transformed lines. MEM remains widely used for monolayer culture of many standard cell types, with optional Hanks' or Earle's salt formulations and a calcium-free modification that permits suspension growth.
RPMI 1640 for suspension and hematopoietic culture
RPMI 1640, developed at the Roswell Park Memorial Institute for culturing human leukemic cells, is optimized for non-adherent cell types &mdash; lymphocytes and other blood cells &mdash; and contains glutathione plus higher biotin, B12, and PABA concentrations than DMEM or MEM. Despite its hematopoietic origin, RPMI 1640 supports a broad range of adherent lines (HeLa, T47D, RENCA, CT26.WT) when properly supplemented.
Ham's F-10/F-12 for CHO and specialized applications
Ham's nutrient mixtures were originally developed for CHO cell clones, HeLa cells, and mouse L-cells, and remain suited to hepatocyte culture, viral fusion experiments, and toxicity assays, with formulations available for use with or without serum. Coon's modification of Ham's F-12 roughly doubles the amino acid and pyruvate content and adds ascorbic acid, developed specifically for hybrid cells produced by viral fusion.
DMEM/F-12 for complex, rich-medium applications
DMEM/F-12 (1:1 mixture) combines DMEM's glucose, amino acid, and vitamin richness with Ham's F-12's zinc, putrescine, hypoxanthine, and thymidine, producing an extremely rich complex medium used for MDCK cells, glial cells, fibroblasts, and human endothelial cells &mdash; and serving as the basal medium for many serum-free Advanced formulations used in organoid and stem cell work.
IMDM for high-density rapid proliferation
IMDM further enriches DMEM with additional amino acids and vitamins, substituting potassium nitrate for ferric nitrate and adding HEPES and sodium pyruvate. IMDM's sodium bicarbonate buffer system (5&ndash;10% CO₂) and enriched composition make it well suited for rapidly proliferating, high-density cultures including Jurkat, COS-7, and macrophage cells.
Liquid vs. powder format
Liquid classic media are ready to use (after appropriate FBS and supplement addition) and include sodium bicarbonate in the formulation. Powdered media are manufactured without sodium bicarbonate, since it tends to off-gas in powder form &mdash; 3.7 g/L sodium bicarbonate must be added upon reconstitution, followed by sterile filtration. Powder formats offer cost and shipping-weight advantages for high-volume labs preparing their own media.
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<h2 data-section-id="17i0pj" data-start="5035" data-end="5061">Specifications context</h2>
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Classic media are manufactured according to originally published formulas, with stability-related modifications documented per product. DMEM's sodium bicarbonate buffer system at 3.7 g/L is standard across liquid formulations; powdered formats require this addition upon reconstitution along with 0.22 &micro;m sterile filtration. As of 2026, DMEM, DMEM/F-12, and RPMI 1640 remain the three most widely specified classic media across academic and biomanufacturing labs, with IMDM increasingly used for high-density suspension applications in bioprocessing.
For recombinant growth factors and cytokines used alongside classic media, see Recombinant Proteins. For supplementation reagents (GlutaMAX, NEAA, sodium pyruvate, HEPES), see Cell Culture Supplements &amp; Additives. Browse Mammalian Cell Culture for the broader category.
<a href="https://mbpinc.net/contact-us">Contact the expert team </a>at MBP to get highly efficient microbial control solutions for your lab.

Antibiotics

Streptomycin

Streptomycin G023 is a 100 mg/ml aminoglycoside antibiotic solution (5 × 1.0 ml) for bacterial contamination control in cell culture and selection of resistant strains. Store at −20 °C, away from light, for up to one year.

<h2 data-section-id="1ebaq4d" data-start="165" data-end="199">What are transfection reagents?</h2>
&nbsp;
Transfection reagents enable the delivery of exogenous nucleic acids &mdash; plasmid DNA, mRNA, siRNA/shRNA, and CRISPR/Cas9 ribonucleoprotein or plasmid components &mdash; into cultured cells for applications spanning gene expression studies, gene silencing, CRISPR-based gene editing, recombinant protein production, and stable cell line development. Delivery methods fall into three categories: chemical methods (cationic lipid/lipofection reagents, polymeric agents like polyethyleneimine/PEI, and calcium phosphate co-precipitation), physical methods (electroporation and biolistic particle delivery), and viral methods (transduction via lentiviral, adenoviral, or AAV vectors, the only category where "transduction" is the technically correct term). Each category includes multiple specific reagents with different optimal nucleic acid types, cell type compatibility, and transient-versus-stable expression outcomes.
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<h2 dir="ltr">What you will find:</h2>
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<ul>
<li dir="ltr" style="font-family: helvetica, arial, sans-serif;" role="presentation">DNAfectin&trade; Plus Transfection Reagent: innovative lipid-based reagent for rapid transfection in common adherent cell lines; fewer handling steps, and works in complete growth media</li>
<li dir="ltr" style="font-family: helvetica, arial, sans-serif;" role="presentation">Susfectin&trade; Transfection Reagent: polymer-based reagents formulated for suspension cultures, providing highly efficient nucleic acid delivery&nbsp;</li>
<li dir="ltr" style="font-family: helvetica, arial, sans-serif;" role="presentation">Transfection Reagent: designed for faster and more reliable concentration of lentiviral particles from cell culture supernatant </li>
</ul>
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<h2 data-section-id="f5ej1k" data-start="1475" data-end="1513">How to choose transfection reagents</h2>
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Chemical: lipofection
Cationic lipid (lipofection) reagents form positively charged complexes with nucleic acids that interact with the negatively charged cell membrane, enabling entry primarily via endocytosis. Examples include DOTMA-based formulations and product lines such as Lipofectamine and X-tremeGENE, suitable for a diverse range of cell lines with DNA, small RNA, and CRISPR/Cas9 components. Lipid transfections adapt well to cost-effective and high-throughput formats but are generally cell-type-specific in optimal performance &mdash; a reagent validated on one line may need re-optimization for another.
Chemical: PEI and calcium phosphate
Polyethyleneimine (PEI) is a polymeric transfection agent that, like cationic lipids, forms complexes with DNA for cell membrane interaction &mdash; commonly used for high-yield transient transfection in suspension cultures for recombinant protein production. Calcium phosphate co-precipitation is a long-established method (Graham &amp; van der Eb, 1973) that remains highly efficient for a wide range of cell types and molecules, suitable for both transient and stable transfection, though the process can be harsher on sensitive cell lines, leading to increased cell death in some cases.
Physical: electroporation
Electroporation exposes cells to electrical pulses that create temporary membrane pores, allowing direct entry of DNA, RNA, and other molecules &mdash; an easy, non-chemical technique yielding high efficiency across diverse cell types. Optimization centers on three parameters: pulse voltage, pulse width, and pulse number, with the goal of maintaining 40-80% cell survival. Electroporation requires roughly five-fold more cells and DNA than calcium phosphate methods, typically 1-5 &micro;g DNA per 10⁷ cells, with good linear correlation between DNA amount and uptake.
Viral transduction enhancers
For viral transduction (lentiviral, adenoviral, AAV), polybrene and DEAE-dextran are polycations that minimize electrostatic repulsion between negatively charged viral particles and cell membranes, enhancing transduction efficiency. FBS has been shown to yield better transduction efficiency than bovine calf serum in some transduction protocols &mdash; a media-composition detail relevant to viral workflows specifically.
Selecting reagent for nucleic acid type
Some reagents are specifically optimized for plasmid DNA (Effectene, TransIT-X2), while others (Lipofectamine RNAiMAX) are designed for small oligonucleotides like siRNA. Co-transfection of multiple nucleic acid types may require protocols and ratios validated specifically for that combination rather than direct extrapolation from single-nucleic-acid optimization.
Pre-transfection cell preparation
Regardless of method, cells should be at least 90% viable and have recovered at least 24 hours post-subculture before transfection. Cell density must avoid both contact inhibition (too high, reducing uptake) and insufficient cell-cell contact (too low, reducing growth) &mdash; both extremes reduce efficiency.
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<h2 data-section-id="1fljvas" data-start="5389" data-end="5414">Specifications context</h2>
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Electroporation optimization targets 40-80% post-pulse cell survival across a parameter space of pulse voltage, width, and number, with typical DNA loading of 1-5 &micro;g per 10⁷ cells showing linear uptake correlation within that range. Calcium phosphate transfection (Graham &amp; van der Eb, 1973) remains a foundational method still in active use for both transient and stable transfection across many cell types. As of 2026, lipid-based reagents remain the default first choice for adherent cell line transfection due to ease of use, with electroporation and viral transduction reserved for hard-to-transfect primary/stem cells and applications requiring stable genomic integration respectively.
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Transfection Reagents

G4000-MSDS

Susfectin™ Transfection Reagent

Susfectin™ Transfection Reagent (G4000) by ABM is a 1.0 mL biodegradable polymer-based reagent for plasmid DNA transfection in suspension cell cultures, delivering 2× efficiency vs PEI in CHO and HEK293 suspension cells. Store at 4°C; do not freeze.

Application

<h2>What Are DNA-Modifying Enzymes?</h2>
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DNA-modifying enzymes catalyze defined chemical changes to DNA molecules: T4 DNA Ligase seals nicks and joins fragments; T4 Polynucleotide Kinase (PNK) transfers a phosphate from ATP to 5'-OH termini; alkaline phosphatase removes 5'-phosphate groups to block self-ligation; Klenow fragment fills in 5' overhangs and removes 3' overhangs to generate blunt ends; DNA methyltransferases add methyl groups to adenine or cytosine residues for epigenetic studies or protection from restriction digestion. These enzymes are distinct from PCR polymerases (which amplify DNA) and restriction enzymes (which cleave at specific sequences). Use DNA-modifying enzymes any time you need to alter DNA end chemistry, join fragments, or protect sequences from downstream enzymatic cleavage.
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<h2 dir="ltr">What you will find:</h2>
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Thermolabile UDG: An essential "cleanup" enzyme that removes carryover contamination in PCR by breaking down uracil-containing DNA, thus guaranteeing your results stay clear of artifact-induced sequence bias.
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T4 DNA Ligase: The crucial molecular adhesive, designed for the swift and efficient connection of blunt or cohesive-end DNA pieces in cloning and NGS adapter ligation.
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T4 Gene 32 Protein: A unique single-stranded DNA binding protein that maintains open templates, greatly enhancing the efficiency of enzymes in challenging amplification and recombination tests.
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<h2>How to Choose DNA-Modifying Enzymes</h2>
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Ligation format
T4 DNA Ligase is the standard choice for cohesive-end and blunt-end ligation in cloning. For high-throughput library prep, choose ligase formulations optimized for 25 degrees C or room-temperature reaction to reduce protocol time. E. coli DNA Ligase uses NAD+ (not ATP) and is preferred for nick sealing in nick-translation reactions.
End repair requirements
Klenow fragment (3' to 5' exo-) fills 5' overhangs and removes 3' extensions to generate blunt ends required for blunt-end cloning or adaptor ligation; its 3'-&gt;5' exonuclease-minus version is used in NGS A-tailing steps to add a single 3'-dA overhang. T4 DNA Polymerase has stronger 3'-&gt;5' exonuclease activity than Klenow and is preferred for end polishing of PCR products with heterogeneous ends.
Phosphorylation/dephosphorylation
Use T4 PNK to add 5'-phosphates to PCR products or synthetic oligonucleotides before blunt-end ligation. Use alkaline phosphatase (CIP or SAP) on linearized vectors to prevent self-ligation; SAP is preferred when heat-inactivation at 65 degrees C is needed before downstream steps. Combine dephosphorylation and ligation in the same tube only after inactivating the phosphatase.
Methylation and protection
CpG methyltransferases and dam/dcm methylases protect recognition sequences from restriction cleavage or enable methylation-sensitive mapping. Dam methylase (methylates GATC sequences) and Dcm methylase (methylates CCWGG) are used to prepare templates resistant to DpnI digestion in cloning workflows where DpnI is used to remove template plasmid.
Purity certification
For RNA co-purification or RNA-sensitive workflows, confirm all DNA-modifying enzymes carry RNase-free certification. ABM lot-release QC includes RNase and DNase contamination tests; certificates of analysis are available on request through MBP.
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<h2>Specifications Context</h2>
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T4 DNA Ligase activity is defined as the amount of enzyme catalyzing 50% ligation of HindIII-cut lambda DNA fragments in 30 minutes at 16 degrees C in a 20 microliter reaction; 1 Weiss unit equals approximately 60 cohesive-end units. Optimal blunt-end ligation uses PEG 4000 at 15% (w/v) as a molecular crowding agent and runs at 25 degrees C to increase effective enzyme concentration. Streamlined NGS library prep workflows combine end repair, A-tailing, and adaptor ligation into a single-tube step, reducing total hands-on time to under 1 hour.&nbsp;
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Seize control of your DNA processes&mdash;<a href="https://mbpinc.net/contact-us">reach out to the MBP team</a> now for a quote on our premium DNA-altering enzymes.

DNA-modifying enzymes

T4 DNA Ligase

G467 by Applied Biological Materials is T4 DNA Ligase from bacteriophage T4. ATP-dependent. Joins cohesive ends, blunt ends, and repairs nicks in dsDNA. Supplied with 10× Reaction Buffer. Standard enzyme for molecular cloning, adapter ligation, and NGS library construction. Store at −20°C.

Format General

Reaction Definition

T4 Gene 32 Protein

E040 by Applied Biological Materials is T4 Gene 32 Protein (SSB) from bacteriophage T4. 100 µg at 10 mg/mL; cooperative ssDNA binding. Boosts RT yield and processivity, PCR yield and specificity, and restriction enzyme digestion efficiency. Supplied with 10× Reaction Buffer (300 µL). Store at −20°C.

<h2>What Are RNA-Modifying Enzymes?</h2>
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RNA-modifying enzymes act on RNA substrates to add, remove, or chemically alter nucleotides and terminal structures. Key enzymes in this category include poly(A) polymerase (PAP), which adds untemplated adenosine residues to RNA 3' ends; T4 RNA Ligase 1, which joins single-stranded RNA; T4 RNA Ligase 2, which joins nicked duplex RNA; vaccinia virus capping enzyme (VCE), which adds a 7-methylguanosine cap to the 5' end of mRNA; 2'-O-methyltransferase, which modifies the cap to generate a Cap 1 structure; and RNA methyltransferases such as METTL3/METTL14 complex used in m6A epitranscriptomics research. These enzymes are foundational tools in the fast-growing field of mRNA-based therapeutics and diagnostics, as well as long-read sequencing library construction. Select RNA-modifying enzymes based on RNA substrate type (single-stranded, duplex, capped), required end structure, and downstream application (therapeutic vs. research grade).
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<h2 dir="ltr">What you will find:</h2>
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T7 RNA Polymerase: The rapid powerhouse of in vitro transcription, ideal for producing large quantities of RNA from DNA templates for probes or functional mRNA research.
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Poly(A) Polymerase (Yeast &amp; E. coli): The definitive stabilizing agent, attaching adenosine tails to the 3' terminus of transcripts to enhance their longevity and translation efficacy&mdash;a crucial element for precise library preparation.
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<h2>How to Choose RNA-Modifying Enzymes</h2>
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Poly(A) tailing vs. RNA ligation.
Poly(A) polymerase is used when a 3'-poly(A) tail is needed for mRNA stabilization, translation enhancement, or as a primer binding site for oligo(dT)-based cDNA synthesis. T4 RNA Ligase 1 (single-strand-specific) is used for adaptor ligation to RNA 3' ends in small RNA sequencing library preparation. T4 RNA Ligase 2 truncated version (paired with a splint oligonucleotide) gives higher efficiency adaptor ligation with less secondary structure bias.
mRNA capping
5'-cap structures protect mRNA from exonucleolytic degradation and are recognized by eIF4E for ribosome recruitment. Vaccinia Capping Enzyme adds a Cap 0 structure; co-treatment with 2'-O-methyltransferase (mRNA Cap 2'-O-Methyltransferase) converts Cap 0 to Cap 1, which reduces innate immune recognition -- critical for therapeutic mRNA applications. Co-transcriptional capping with CleanCap analogs avoids the separate capping step.
Epitranscriptomics
m6A RNA methyltransferases (METTL3, METTL14, WTAP complex) and demethylases (FTO, ALKBH5) are used to add or remove N6-methyladenosine modifications in cellular RNA for functional studies. These enzymes require S-adenosylmethionine (SAM) as a methyl donor and are supplied at a microgram scale for biochemical assays.
RNase inhibitor pairing
All RNA-modifying enzyme reactions require an RNase-free environment. Include RNase inhibitor protein at 0.5-2 U per microliter in reactions without heat-inactivation capability. Use DEPC-treated water and certified RNase-free tubes and tips for all RNA work.
Application scale
Research-grade RNA-modifying enzymes are available in standard unit sizes for individual experiments. For manufacturing-adjacent workflows (large-scale IVT for mRNA vaccines or CAR-T cell therapy applications), contact MBP for volume pricing and GMP-compatible sourcing options.
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<h2>Specifications Context</h2>
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Poly(A) polymerase activity is measured as the amount of enzyme incorporating 1 nmol of AMP into acid-precipitable RNA in 30 minutes at 37 degrees C. Typical poly(A) tail lengths of 100-250 nucleotides are generated in 10-20 minute reactions at 37 degrees C with 1 mM ATP and 2-5 U of enzyme per microgram of RNA. Vaccinia Capping Enzyme reaction efficiency exceeds 95% for IVT transcripts of 500-5000 nt when used at recommended ratios; verify by LC-MS or HPLC analysis for therapeutic applications. Co-transcriptional Cap 1 capping using modified trinucleotide cap analogs is increasingly adopted in mRNA manufacturing to eliminate separate enzymatic capping steps.&nbsp;
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Prepared to customize your transcripts? <a href="https://mbpinc.net/contact-us">Contact the MBP team</a> today for a personalized quote on our RNA-modifying tools.

RNA-modifying enzymes

T7 RNA Polymerase

E041 by Applied Biological Materials is T7 RNA Polymerase at 50 U/µL, supplied as 5,000 U (100 µL) with 10× Reaction Buffer. Catalyzes 5′-to-3′ RNA synthesis exclusively from T7 promoter templates. Does not recognize SP6 or T3. For in vitro transcription, hybridization probes, mRNA synthesis, and sgRNA production. Store at −20°C.