title: Factor IX deficiency (haemophilia B, Christmas disease) in a crossbred dog.
mesh_terms: D000818:Animals; D004283:Dog Diseases / Q000097:blood / Q000175:diagnosis*; D004285:Dogs; D002836:Hemophilia B / Q000097:blood / Q000662:veterinary*; D008297:Male; D010314:Partial Thromboplastin Time / Q000662:veterinary