title: Diurnal variations in ovarian steroids and luteinizing hormone in cows at oestrus.
mesh_terms: D000818:Animals; D000937:Antigen-Antibody Reactions; D002417:Cattle; D002850:Chromatography, Gel; D002940:Circadian Rhythm; D004285:Dogs; D004967:Estrogens / Q000097:blood*; D004971:Estrus; D005260:Female; D007106:Immune Sera; D007986:Luteinizing Hormone / Q000097:blood*; D011247:Pregnancy; D011374:Progesterone / Q000097:blood*; D011485:Protein Binding; D011817:Rabbits / Q000276:immunology; D013997:Time Factors
chemical_list: D004967:Estrogens; D007106:Immune Sera; D011374:Progesterone; D007986:Luteinizing Hormone