title: An evaluation of pregnancy testing in sheep using a real-time ultrasound scanner.
mesh_terms: D000818:Animals; D005260:Female; D008098:Litter Size; D011237:Predictive Value of Tests; D011247:Pregnancy; D011258:Pregnancy Tests / Q000662:veterinary*; D011270:Pregnancy, Animal; D012756:Sheep; D014463:Ultrasonography / Q000662:veterinary*