不过，文章里也写道，这些担忧，都要等到含人细胞的嵌合体胚胎能够、且被允许发育，才会成真。
伦理标准需要细化
如果以“嵌合体胚胎是否继续发育”为标准，这次的人-猴胚胎没有踩到伦理的红线。这些胚胎从受精起就只在体外培养，而且只培养到第 20 天。通讯作者之一、美
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