The MCF10a cell line is a human mammary epithelial cell line that is non-tumorigenic and commonly used as a model for studying normal breast cell biology and early stages of breast cancer development. These cells are valuable for in vitro studies of cell signaling, differentiation, and response to growth factors., This particular batch is from P#3, ContactPerson CM, and was prepared in 6/2012. Quantity available is 1 million cells.