title: Cytogenetic, anatomical and blood group studies of sheep twin chimaeras.
mesh_terms: D000818:Animals; D001789:Blood Group Antigens; D002417:Cattle; D005260:Female; D005611:Freemartinism / Q000097:blood*; D007621:Karyotyping; D009030:Mosaicism; D011247:Pregnancy; D012756:Sheep; D014427:Twins
chemical_list: D001789:Blood Group Antigens