Reality Check on an Embryonic Debate

Earlier this year scientists in Kyoto had announced a feat of biological legerdemain that promised to obviate the long and bitter stem-cell debate, which has pitted the moral status of days-old human embryos against the moral duty of biomedical researchers and society to seek cures for devastating diseases. The Kyoto University team had taken skin cells from adult mice and "reprogrammed" them, turning back the biological calendar so the adult cells could, like embryonic cells, turn into any kind of cell in the body.

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