title: Plasma concentration of androstenedione during the bovine oestrous cycle.
abstract: A radioimmunoassay with Sephadex chromatography for androstenedione is described. Concentrations of androstenedione in bovine peripheral blood during the oestrous cycle ranged from 80 to 100 pg/ml. There was considerable variation and no pattern suggestive of physiological significance emerged, unlike those of oestradiol and testosterone.
mesh_terms: D000735:Androstenedione / Q000097:blood*; D000818:Animals; D002417:Cattle / Q000097:blood*; D002850:Chromatography, Gel; D003429:Cross Reactions; D004958:Estradiol / Q000097:blood; D004971:Estrus; D005260:Female; D011247:Pregnancy; D013739:Testosterone / Q000097:blood
chemical_list: D013739:Testosterone; D000735:Androstenedione; D004958:Estradiol