E-518 by Applied Biological Materials is the complete Retro-Easy-HA™ retrovirus expression system (1 Kit) for stable delivery and expression of HA-tagged transgenes in dividing mammalian cells via replication-incompetent retrovirus. Includes HA-tag vector with Puromycin selection. Use with Pack-Easy Cells (E-511). Retrovirus Expression Systems Protocol and Drug Selection Killing Curve downloadable. Store at −20°C.