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Smart Money Is on Adult Stem Cells, but Some Scientists Still Lust after Embryos

When adult stem cells do the job, why are some scientists tinkering with human embryos?

Induced Stem Cells Get Faster, Better, Cheaper

Scientists have not only made the production of induced pluripotent stem cells much more efficient, but also have made them just as capable as embryonic stem cells of being able to produce any cell type.
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