Stock Photo: STEM CELL. STEM CELL Three types of stem cells exist. Totipotent (totally potent) stem cells, present within th early embryo, are capable of forming every type of body cell. Pluripotent cells (also called embryonic stem cells) and multipotent cells (also called somatic or adult stem cells) are differentiated to varying degrees and produce specialized cells. Stem cells in the umbilical cord are hematopoietic. They are differentiated or specialized, adult stem cells that are committed to making