LiveScience.com - Chopping off an amphibian’s arm is fairly inconsequential, considering a brand-new one can regenerate in three months. Now, research shows that a mouse’s hair follicles can do the same when its skin is wounded, sparking stem-cell-like machinery into action to produce fresh follicles.The finding tears down 50-year-old dogma about mammals’ inability to regenerate hair-growing tissue, investigative dermatologists at the University of Pennsylvania School of Medicine said. ...
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