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Published online 22 November 2001 | Nature | doi:10.1038/news011122-14

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The regeneration gap

Newts grow new legs, Hydra new heads. These remarkable creatures may hold clues for researchers developing human cellular therapies. But the connections are only now starting to be made. Helen Pearson reports.

Take one flatworm, chop into 279 pieces and leave for two weeks. Feed occasionally.

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