作者: Errol R. Norwitz , Danny J. Schust , Susan J. Fisher
DOI: 10.1056/NEJMRA000763
关键词: Placenta 、 Early pregnancy factor 、 Medicine 、 Pregnancy 、 Gestation 、 Immunology 、 Andrology 、 Ovum implantation
摘要: The implantation of fertilized ova and the formation of the placenta are crucial steps in reproduction. This review summarizes current information about these steps, including some …