Pregnant mares' urine as a source of oestrogens.
STEVENSON
W G
WG
D000818:Animals; D001826:Body Fluids; D003271:Contraceptive Agents, Female; D045166:Estradiol Congeners; D004967:Estrogens / Q000652:urine*; D005260:Female; D006736:Horses; D006801:Humans; D011247:Pregnancy
D003271:Contraceptive Agents, Female; D045166:Estradiol Congeners; D004967:Estrogens