
Anti-MEK1 (Phospho-Ser221) Antibody (Y011161) is a rabbit polyclonal phospho-specific antibody detecting MEK1 only when phosphorylated at Ser221 in human, mouse, and rat samples. Validated for WB (1:500–1:1000) and IHC (1:50–1:100). Affinity-purified; 100 μg liquid format. Research Use Only.