Downgraded to a theory
In the Feb. 13 “Human Nature,” William Saletan said that research in mice indicated that the embryoblast-trophoblast distinction began at the two-cell stage. As evidence, the article linked to a 2006 paper in Science. That paper has since been retracted due to “falsified or fabricated images” by one co-author. However, according to subsequent communication with a different co-author who was not implicated in the fabrication, the essential findings “have been replicated and appear to be as reported.” The article has been rephrased to describe the “finding” as a “theory,” pending publication of the replicating study. Link
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