Urinary estrogens of the pregnant sow.
D000818:Animals; D003271:Contraceptive Agents, Female; D004967:Estrogens; D005260:Female; D011247:Pregnancy / Q000652:urine; D013552:Swine
D003271:Contraceptive Agents, Female; D004967:Estrogens
PREGNANCY/urine in; SWINE