High-profile paper retracted

A second paper by a Harvard stem cell biologist is also under review

Megan Scudellari

A rising stem cell star has retracted a recent high-profile Nature paper because of "serious concerns" with the data. A second paper in Blood by the same group is also under review. Whether the retraction is due to a mistake or misconduct remains unclear, but a comparison of the papers done by Nature reporters found two sets of flow cytometry plots that seem to be duplicates. Amy Wagers, a stem cell biologist at the Joslin Diabetes Center and assistant professor at Harvard Medical School, published a retraction with two co-authors on Wednesday (October 13) of a January 2010 Nature paper, cited 13 times, which found that factors in the blood of young mice can rejuvenate blood stem cells in older mice. "This is a shame because I thought the results were really exciting," said Deborah Dunn-Walters in an email, a researcher studying aging at King's College London School...

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