title: Serum progestins and luteinising hormone levels in non-suckled primiparous heifers.
mesh_terms: D000818:Animals; D001942:Breast Feeding; D002417:Cattle; D004971:Estrus; D005260:Female; D007986:Luteinizing Hormone / Q000097:blood*; D010298:Parity; D049590:Postpartum Period; D011247:Pregnancy; D011282:Pregnenediones / Q000097:blood*; D011374:Progesterone / Q000097:blood*; D013997:Time Factors
chemical_list: D011282:Pregnenediones; D011374:Progesterone; D007986:Luteinizing Hormone