Once again, embryonic stem cells have been found to cause the formation of tumors in laboratory animals, thereby bringing into serious question the safety and efficacy of embryonic stem cells as a possible therapy in the treatment of human disease.
Once again, adult stem cells trump embryonic stem cells not only for scientific logic but also for financial common sense.
As the result of a recent discovery at Harvard, adult human cells may be safely reprogrammed into cells that behave as stem cells.
In the second half of a two-part series, CBS News correspondent Wyatt Andrews interviews doctors who are working to regrow missing limbs in American servicemen and women who have been wounded in Iraq.
Scientists have discovered the biological rhythms that regulate the release of stem cells from the bone marrow. The findings are important for the treatment of various diseases and the prevention of cancer.
In the first half of a two-part series, CBS News correspondent Wyatt Andrews investigates the new field of regenerative medicine by visiting a laboratory in which body parts are manufactured from stem cells.
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