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。

  The germ layers differentiate into ectoderm, mesoderm, and endoderm.

• 胚はい葉よう上じょう皮ひは生せい殖しょく腺せんの表ひょう面めんを覆おおっている。

  The germinal epithelium covers the surface of the gonads.