Primary Normal Human Epidermal Keratinocytes, neonatal (HEKn) are isolated from neonatal foreskin and cryopreserved at the end of the primary culture.

The cells are:
• Performance tested—at least 30 population doublings when cultured in EpiLife Medium supplemented with HKGS (for HEKn) or Supplement S7 (for HEKn-AOF)
• Guaranteed to be ≥ 70% viable
• Tested for mycoplasma, bacteria, yeast or other fungi, hepatitis B, hepatitis C, and HIV-1 viruses

Each vial contains over 0.5 x10⁶ viable cells that have been cryopreserved at the end of the primary culture stage in a medium containing 10% DMSO.