胚はい葉よう

noun, noun which may take the genitive case particle 'no'

germ layer; germinal epithelium

Embryological term for the primary layers (ectoderm, mesoderm, endoderm) that form during early development. Also used for the epithelium covering the gonads.

• 胚はい葉ようは外がい胚はい葉よう、中ちゅう胚はい葉よう、内ない胚はい葉ように分わかれる。