Japan scientist proposes to retract stem cell research paper

KOFU, Japan - Teruhiko Wakayama, a professor at the University of Yamanashi and one of the co-authors of a research paper on what appeared to be a groundbreaking method of producing stem cells, explains his proposal to retract the paper in Kofu, Yamanashi Prefecture, central Japan, on March 10, 2014. Questions have been raised about irregular images contained in the paper, written by a group led by Haruko Obotaka at the Center for Developmental Biology of the government-run Riken institute, on a method it named "stimulus-triggered acquisition of pluripotency" or STAP.

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