Nobel Prize for Stem Cell Discoveries

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This year's Nobel Prize for Physiology or Medicine is being shared by scientists for work done 40 years apart. British scientist John Gurdon cloned a frog back in 1962.  In 2006 and 2007, Japanese research Shinya Yamanaka used a different technique to reprogram cells of both mice and humans beings. Their techniques in stem cell research could help medicine turn back the biological clock. Brian Vastag reports on science for the Washington Post.




Warren Olney