The roof of the archenteron consists of cells invaginated over the dorsal lip. 3. During neurulation the cells of the dorsal wall of the archenteron form the temporarily existed structures-the back fold and the subnotochord, which soon disappear.

  • 原肠背壁细胞来源于背唇转入层,3.原肠背壁细胞在神经胚形成过程中,形成了短暂存在的原肠背褶和底索。

  • 互联网摘选 2025-01-19 23:25:49

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