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Adult stem cells produce the different kinds of cells that maintain the bodyâs tissues and organs, and, importantly, they have the ability to divide and reproduce indefinitely. These cells typically produce the type of tissue in which they are found. Adult stem cells are sometimes also called somatic stem cells. Although commonly used and accepted, the term adult stem cells is a little misleading, since these cells are actually found in infants and children as well as in adults.
Stem cells are categorized by their potential to differentiate into other types of cells. Embryonic stem cells are the most potent since they must become every type of cell in the body. The full classification includes: 1  Totipotent-the ability to differentiate into all possible cell types.2  Examples are the zygote formed at egg fertilization and the first few cells that result from the division of the zygote.tem cells are a class of undifferentiated cells that are able to differentiate into specialized cell types. Commonly, stem cells come from two main sources: 1  Embryos formed during the blastocyst phase of embryological development (embryonic stem cells) and. 2  Adult tissue (adult stem cells).