Study reveals new way to fully regenerate skin without scarring

Study reveals new way to fully regenerate skin without scarring

A cut in the womb can vanish almost without a trace. The same injury a few days after birth leaves behind a scar. That sharp shift, described in a March 20 study in Cell, helps explain why skin loses much of its ability to rebuild itself so quickly, and it points to a possible way to restore some of that lost talent. In mice, Harvard stem cell biologists found that blocking a signal tied to excess nerve growth let wounded skin regenerate a far w…