Primary human mammary epithelial cells, cryopreserved at the end of the 6th culture.

• Viability at least 70%
• ≥500,000 viable cells/vial
• Capable of at least 16 population doublings
• Mycoplasma: Not Detected
• Hepatitis B: Not Detected
• Hepatitis C: Not Detected
• HIV-1: Not Detected
• Bacteria, yeast, and other fungi: Not Detected
• Positive for Cytokeratins 5⁄6, 8, 18, and E-cadherin