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单词 胚盘
释义 〔blastoderm〕The layer of cells that develops on the surface of the yolk in an avian or reptilian egg and gives rise to the germinal disk from which the embryo develops.胚盘:鸟蛋或爬行动物卵的蛋黄表面的细胞层,胚盘由此形成,胚胎从胚盘发育〔blastoderm〕The layer of cells formed by the cleavage of a fertilized mammalian egg. It later divides into the three germ layers from which the embryo develops.胚盘:由哺乳动物受精卵分裂而形成的细胞层。后期分裂为三层,胚胎由此发育
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