Video: Safe alternatives to human embryonic stem cells
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Video: Safe alternatives to human embryonic stem cells

Scientists reported Thursday they had developed a technique that can quickly create safe alternatives to human embryonic stem cells, a major advance toward developing a less controversial approach for treating for a host of medical problems. The work, by a team led by Derrick Rossi of the Children's Hospital Boston, was praised by other researchers as a breakthrough. (Boston Children's Hospital)

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