Inside each of our hard, calcified teeth is a small population of living stem cells that can differentiate into many types of tissue. The origin of those stem cells has long been unknown, but scientists may now have a completely surprising answer: Cells of the nervous system can migrate into the middle of a tooth and actually turn back into stem cells. If verified, this could be a possible new source for stem cells.
via Gizmodo http://ift.tt/1rMS3dV http://ift.tt/1xG2CRB
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