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The epidermis is populated by stem cells that produce daughters that differentiate to form the interfollicular epidermis, hair follicles and sebaceous glands. Diffusible factors, cell-cell contact and extracellular matrix proteins are all important components of the microenvironment of individual stem cells and profoundly affect the differentiation pathways selected by their progeny. Here, we summarize...
It has been known for decades that stem cells with limited differentiation potential are present in post-natal tissues of mammals, and adult stem cells are already used clinically. For instance, hematopoietic stem cells can reestablish the hematopoietic system following myeloablation, and stem cells are being used to regenerate corneal and skin tissue. But recent studies report that adult tissues...
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