title: Variants of haemophilia B.
mesh_terms: D000818:Animals; D000906:Antibodies; D002417:Cattle; D005164:Factor IX / Q000032:analysis* / Q000037:antagonists & inhibitors; D002836:Hemophilia B / Q000097:blood* / Q000145:classification / Q000453:epidemiology / Q000276:immunology; D006801:Humans; D006814:Hungary; D009500:Neutralization Tests; D011517:Prothrombin Time; D011817:Rabbits / Q000276:immunology
chemical_list: D000906:Antibodies; D005164:Factor IX