Scientists in Japan, U.S. report stem cell breakthrough from human skin; no embryos needed

Tuesday, November 20, 2007 | 5:40 p.m. CST; updated 6:51 p.m. CDT, Monday, July 21, 2008

NEW YORK — Scientists have made ordinary human skin cells take on the chameleon-like powers of embryonic stem cells, a startling breakthrough that might someday deliver the medical payoffs of embryo cloning without the controversy.

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