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人类胚胎着床的关键在于具备着床功能的胚胎和接受能力的子宫内膜同步化。子宫内膜有一个极短的允许胚胎植入的容受性最大的敏感时期,这一时期大约在人正常月经周期的排卵后7-9d(第21-23 d),称为着床窗期或种植窗期(the implantation window)。子宫内膜植入窗的出现是胚
The key to embryo implantation in humans is the synchronization between embryo implantation and receptive endometrium. The endometrium has a very short period of susceptibility to the most tolerable embryo implantation, which is about 7-9 days after ovulation (days 21-23 d) of the normal menstrual cycle and is called the implantation window Or the implantation window. The appearance of endometrial implantation window is embryo