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Published online 7 June 2006 | Nature | doi:10.1038/news060605-6

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Harvard enters human stem-cell race

Researchers ask women to surrender their eggs for science.

In an intensifying race to grow embryonic stem cells matched to patients, Harvard researchers announced on 6 June that they had cleared two year's worth of regulatory hurdles to start such work. They plan to ask women to donate their eggs for the research.

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