Creative Bioarray's normal Human Epidermal Melanocytes adult (HEMa), when grown in Creative Bioarray's LIDer Ma Medium, provide an ideal low serum culture model, without PMA or Cholera toxin, for the accurate testing of compounds and for use in the study of cancer or dermal biology. Creative Bioarray's HEMa are cryopreserved as secondary cells to ensure the highest viability and plating efficiency. Our HEMa are quality tested in LIDer Ma Medium to ensure optimal reduced-serum growth over a period of at least 15 population doublings at rates greater than media supplemented with higher serum, PMA or Cholera toxin. Cell Features: HEM are cryopreserved after primary culture or secondary culture isolated from human skin and expanded once or twice in culture vessels before being harvested for cryopreservation. HEMn can be grown in a low serum medium without phenol red or antimicrobials when cultured in DermaLife M Medium. HEMa can be grown in a low serum medium without phenol red or antimicrobials when cultured in DermaLife Ma Medium. Culture HEM without PMA or cholera toxin or other artificial non-specific stimulants HEM are extensively tested for quality and optimal performance. Creative Bioarray guarantees performance and quality.