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.Microchips are convenient, safe, and reliable. Implantation is simple and routine.微芯片是方便 、 安全和可靠的....
An implantation can occur only under certain proper conditions.植入只有在某些合适的条件下才能够发生.Hypophysectomy before implantation terminates pregnancy and after the 44 th day of gestation causes abortion in goat.山羊与附植前切除下立脑可使妊娠终止,而在妊...