title: Diagnosis of pregnancy in the ewe by vaginal biopsy.
mesh_terms: D000818:Animals; D001706:Biopsy; D004971:Estrus; D005260:Female; D008722:Methods; D011247:Pregnancy; D011258:Pregnancy Tests / Q000662:veterinary*; D011270:Pregnancy, Animal; D012756:Sheep / Q000502:physiology*; D013997:Time Factors; D014621:Vagina / Q000033:anatomy & histology*