While reprogrammed stem cells--those derived from fully differentiated adult cells--can be transformed into any type of tissue, scientists have now discovered that they preserve a memory of where they came from. That memory appears to influence the cells' development; reprogrammed stem cells are more easily converted back to their original identity, according to a study released online today in Nature. The findings could affect research into the two main uses for reprogrammed stem cells; growing efforts to study disease in cells derived from patients with those diseases, and the development of replacement cell therapies.
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