Pregnancy diagnosis in ewes by ultrasonic scanning.
D000818:Animals; D005260:Female; D011247:Pregnancy; D011258:Pregnancy Tests / Q000662:veterinary*; D011272:Pregnancy, Multiple; D012756:Sheep / Q000033:anatomy & histology / Q000502:physiology*; D014463:Ultrasonography; D014599:Uterus / Q000033:anatomy & histology