ふーん。なんかわかったようなわからないような説明ね。
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①A big complication of doing their analysis in chimaeric embryos between E9-E12.5 (stages shown in their figures)is that
②-1.the supposed contribution of STAP cells to the trophoblast in the placenta and yolk sac
②-2.could have been mistaken
②-3.due to the presence of GFP-positive extraembryonic mesoderm.