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Published online 14 December 2005 | Nature | doi:10.1038/news051212-5

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Stem-cell scientist asks for retraction

US partner urges Korean cloner to retract landmark paper.

In the latest chapter of a messy scientific divorce, biologist Gerald Schatten has asked his former collaborator, Woo Suk Hwang, to retract a celebrated stem-cell paper published under both their names.

A statement issued on 13 December by the University of Pittsburgh, Philadelphia, reveals that Schatten has asked to remove his name from a paper that he co-authored with Hwang, of Seoul National University in South Korea, and others.

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