News & AnalysisBiomedicine

Human Stem Cells From Cloning, Finally

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Science  17 May 2013:
Vol. 340, Issue 6134, pp. 795
DOI: 10.1126/science.340.6134.795

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This time it looks like it's for real: Researchers have made personalized human embryonic stem cells with a method similar to how Dolly the sheep was cloned—though with an added jolt of caffeine. The success, which produced stem cells carrying DNA belonging to a baby with an inherited disorder, comes after years of work in monkey cells. A group is now reporting a recipe that works for human cells using somatic cell nuclear transfer.