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Stem cells from umbilical chord blood have also been used, for over a year now, to treat neural diseases.
Although there are many uses for adult stem cells, they do have their limitations (e.g. somatic mutations, apparently a limited number of cell types that they can differentiate into, very small number, difficult to isolate). Only embryonic stem cells are easy to produce and capable of differentiating into all the body's cell types.
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