title: [Ultrastructural studies of the chorion of women treated with gestanon].
mesh_terms: D000022:Abortion, Spontaneous / Q000188:drug therapy; D000500:Allylestrenol / Q000627:therapeutic use*; D002823:Chorion / Q000187:drug effects / Q000648:ultrastructure*; D004963:Estrenes / Q000627:therapeutic use*; D005321:Extraembryonic Membranes / Q000648:ultrastructure*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011372:Progestins / Q000627:therapeutic use*
chemical_list: D004963:Estrenes; D011372:Progestins; D000500:Allylestrenol
vernacular_title: Ultrastrukturni prouchvaniia na khorion ot zheni, tretirani s gestanon