the membrane that forms the wall of the blastocyst in early development; aids implantation in the uterine wall; "after implantation of the blastocyst in the uterine wall the trophoblast divides into two layers, the chorion and the placenta"
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1. 母体 - 胎児接点の免疫 immunology of the maternal fetal interface
2. 胎盤の発達および生理学 placental development and physiology
3. ヒト絨毛性性ゴナドトロピン:妊娠および妊娠性絨毛性疾患の検査と低検査値が持続する原因 human chorionic gonadotropin testing in pregnancy and gestational trophoblastic disease and causes of low persistent levels