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TOKYO — One of the authors of a study that was claimed to have discovered a simple way to make stem cells said on Monday that he was no longer sure of his team’s conclusions, and he called for the study to be retracted.
The study, laid out in two papers published by Nature in January, surprised scientists around the world by finding that a simple acid bath might turn cells in the body into multipurpose stem cells. The new technique could be a quicker and easier source of stem cells than methods now in use, the authors said.
But on Monday, Teruhiko Wakayama, a professor of developmental engineering at the University of Yamanashi and one of the study’s co-authors, told NHK, Japan’s public broadcaster, that a series of concerns raised in recent weeks by researchers around the world had shaken his belief in the study’s findings.
“There are too many overall issues that I am not sure about. I am increasingly uncertain,” Dr. Wakayama told NHK.
The new technique was developed by researchers at the Riken Center for Developmental...
The study, laid out in two papers published by Nature in January, surprised scientists around the world by finding that a simple acid bath might turn cells in the body into multipurpose stem cells. The new technique could be a quicker and easier source of stem cells than methods now in use, the authors said.
But on Monday, Teruhiko Wakayama, a professor of developmental engineering at the University of Yamanashi and one of the study’s co-authors, told NHK, Japan’s public broadcaster, that a series of concerns raised in recent weeks by researchers around the world had shaken his belief in the study’s findings.
“There are too many overall issues that I am not sure about. I am increasingly uncertain,” Dr. Wakayama told NHK.
The new technique was developed by researchers at the Riken Center for Developmental...