title: Hemophilia B (factor IX deficiency) in an Old English Sheepdog.
mesh_terms: D000818:Animals; D001803:Blood Transfusion; D004283:Dog Diseases / Q000175:diagnosis* / Q000628:therapy; D004285:Dogs; D002836:Hemophilia B / Q000175:diagnosis / Q000628:therapy / Q000662:veterinary*; D008297:Male