胚层

胚层 [pēi céng]

1. ■ {生物} blastoderm; blastophyllum; blastophylle; germinal layer; germ-layer:

内胚层 entoderm;

外胚层 ectoderm;

中胚层 mesoderm;

胚层学说 germ-layer theory;

胚层反向 entypy