title: Vaginal biopsy as a method for diagnosing pregnancy in the ewe.
mesh_terms: D000818:Animals; D001706:Biopsy; D002467:Cell Nucleus; D004847:Epithelial Cells; D004971:Estrus; D005260:Female; D008722:Methods; D009092:Mucous Membrane / Q000033:anatomy & histology; D010053:Ovary / Q000502:physiology; D011247:Pregnancy; D011258:Pregnancy Tests / Q000662:veterinary*; D012756:Sheep / Q000502:physiology*; D014621:Vagina / Q000033:anatomy & histology / Q000166:cytology*