blastocyst造句

Shortly after implantation the blastocyst wall, the trophoblast, consists of two layers of cells.
植入之后不久,胚囊的壁, 即滋养细胞含有两层细胞.

The blastocyst is then surgically introduced into the uterus of a foster mother.
然后通过手术把胚囊引进寄养母体的子宫内.

The attachment of the blastocyst to the lining of the uterus.
胚泡附着到子宫内膜.这一过程称为植入.