title: The effect of melengestrol acetate (MGA) on ovarian function and fertilization in beef heifers.
mesh_terms: D000818:Animals; D002417:Cattle; D002582:Cervix Mucus / Q000187:drug effects; D003276:Contraceptives, Oral / Q000494:pharmacology*; D004971:Estrus / Q000187:drug effects; D005260:Female; D005306:Fertilization / Q000187:drug effects*; D007986:Luteinizing Hormone / Q000097:blood / Q000378:metabolism; D006080:Ovarian Follicle / Q000254:growth & development; D010053:Ovary / Q000187:drug effects* / Q000378:metabolism; D010060:Ovulation / Q000187:drug effects; D011247:Pregnancy; D011374:Progesterone / Q000097:blood / Q000378:metabolism; D011372:Progestins / Q000494:pharmacology*
chemical_list: D003276:Contraceptives, Oral; D011372:Progestins; D011374:Progesterone; D007986:Luteinizing Hormone