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单词 embryonic disk
释义 embryonic disk
 Embryol.
  1. Also called embryonic shield. in the early embryo of mammals, the flattened inner cell mass that arises at the end of the blastocyst stage and from which the embryo begins to differentiate.
  2. the blastodisk of yolky eggs.
 [1935-40]
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更新时间:2024/11/10 16:27:09