title: Prevention of implantation by antiprogesterone.
mesh_terms: D000730:Androstadienes / Q000494:pharmacology*; D000818:Animals; D010064:Embryo Implantation / Q000187:drug effects*; D047108:Embryonic Development / Q000187:drug effects; D005260:Female; D005327:Fetal Resorption / Q000139:chemically induced; D007555:Isoxazoles / Q000494:pharmacology; D011247:Pregnancy; D011374:Progesterone / Q000037:antagonists & inhibitors* / Q000494:pharmacology; D051381:Rats; D013997:Time Factors
chemical_list: D000730:Androstadienes; D007555:Isoxazoles; D011374:Progesterone