Acid-bath method for making stem cells under fire

Researchers give tips for reproducing results, but one coauthor calls for retraction

By Tina Hesman Saey, 18:28 PM March 10, 2014

A surprisingly simple method for creating stem cells by dipping cells in acid has so far proven impossible to replicate, prompting calls for the original research papers, published in January, to be retracted. One of those calls is coming from inside the large group of collaborators that first introduced the STAP stem cells, a special kind of ultraflexible cell shown to produce any type of cell in the body and some in the placenta (SN: 2/22/14, p. 6).

Haruko Obokata of the RIKEN Center for Dev...

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