title: Plasma progesterone concentrations before mating and in early pregnancy in the beef heifer.
mesh_terms: D000818:Animals; D002417:Cattle; D004971:Estrus; D005260:Female; D011247:Pregnancy; D011270:Pregnancy, Animal; D011374:Progesterone / Q000097:blood*; D013997:Time Factors
chemical_list: D011374:Progesterone