Stem cells, illustration. Stem cells are undifferentiated cells that can produce other types of cell when they divide. There are three main stem cell types in mammals: embryonic stem cells, derived from blastocysts; adult stem cells, which are found in adult tissues; and cord blood stem cells, which are found in the umbilical cord.
July 23rd, 2016
Viewed 199 Times - Last Visitor from New York, NY on 07/19/2019 at 3:01 PM