实验室内配子的受精率在80％以上,可以大致反映输卵管内的受精状态,而体外授精-胚移植成功率只有30％,使人注意作为着床场所的子宫内膜。Noyes的子宫内膜逐日形态学检查提供子宫内膜对卵巢激素反应性的情况,在体外授精-胚移植时发现有时即使移植一个发育不良的胚也可妊娠,而相反有时既使移植几个发育良好的胚也不能达到妊娠。决定着床成功与否的因子除子宫 Laboratory fertilization rate of gametes in more than 80%, can roughly reflect the tubal fertilization state, and in vitro fertilization - embryo transfer success rate of only 30%, people pay attention to the implantation of the endometrium. Noyes daily morphological examination of the endometrium to provide endometrial ovarian hormone responsive situation found during in vitro fertilization - embryo transplantation sometimes even if the transplantation of a dysplastic embryo can be pregnant, but sometimes even if the transplant several development Good embryos can not reach pregnancy either. Factors that determine the success of implantation except the uterus