1. 孕体：从内分泌来说,是孕体(conceptus)产生信号,阻止黄体退化,使其继续合成并分泌孕激素,从而使妊娠能够确立并维持下去的一种生理机制胎衣(Afterbirth)是胎膜的总称,包括部分断离的脐带.

2. 胚体：受孕 conception | 胚体 conceptus | 先天性激素生成异常甲状腺肿 congenital dyshormonogenetic goiter

noun

1. an animal organism in the early stages of growth and differentiation that in higher forms merge into fetal stages but in lower forms terminate in commencement of larval life

Synonym: embryofertilized egg