| 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 |