title: Ultrasound diagnosis of pregnancy in cattle.
authors.forename: P J
authors.initials: PJ
authors.lastname: Ball
authors.forename: D D
authors.initials: DD
authors.lastname: Logue
mesh_terms: D000034:Abortion, Veterinary / Q000209:etiology; D000818:Animals; D002417:Cattle; D005260:Female; D008892:Milk / Q000737:chemistry; D011247:Pregnancy; D011270:Pregnancy, Animal; D011374:Progesterone / Q000032:analysis; D016216:Ultrasonography, Prenatal / Q000009:adverse effects / Q000662:veterinary*
chemical_list: D011374:Progesterone