Embryo nidation is a complex and sequencing physiological processes.

胚胎着床是复杂化生过。

Ectopic Pregnancy is the nidation and development of the amphicytula out of the cavitas uteri .

（孕宫腔以外部位着床、发育，宫外孕。

Abstract: Embryo nidation is a complex and sequencing physiological processes.

胚胎着床是复杂化生过。