KnowraTrophoblastLinked fromLinked fromThe 6 pages that link to Trophoblast, each with the reason it gives.All 6Broader topic 4Narrower topic 2PlacentaBroader topic: Trophoblast cells form the fetal portion of the placenta and invade maternal tissue.Human chorionic gonadotropinNarrower topic: Trophoblast cells differentiate into the placental tissues that produce hCG.ImplantationBroader topic: Trophoblast cells adhere to and penetrate the uterine lining.BlastocystBroader topic: This outer layer mediates contact with the uterus and helps establish placental tissues.Human embryonic developmentBroader topic: This lineage mediates early contact with maternal tissues and supports the embryo.Molar pregnancyNarrower topic: Molar pregnancies arise from abnormal growth of trophoblastic tissue.