Cryopreserved Normal Human Epidermal Keratinocytes are guaranteed through 18 population doublings for adult cells. All cells test negative for mycoplasma, bacteria, yeast, and fungi. HIV-1, hepatitis B and hepatitis C are not detected for all donors and/or cell lots. A Certificate of Analysis is provided for each cell lot purchased. Normal Human Dermal fibroblasts from matched donors are available for certain lots.Purchase our Adult Keratinocyte Cell Culture Kit (catalog no. 00192627B) and get a discounted price on cells and media. The kit consists of a cryopreserved ampule of adult keratinocytes (catalog no. 00192627) and KGM-Gold BulletKit Growth Media (catalog no. 00192060)Content:1 x Cryopreserved ampule of NHEK-Ad from single donor containing ≥ 500,000 cells