title: [Immunological studies on factor IX antigen in patients with hemophilia B variant].
mesh_terms: D000328:Adult; D000941:Antigens / Q000032:analysis / Q000276:immunology*; D005164:Factor IX / Q000276:immunology*; D005260:Female; D002836:Hemophilia B / Q000276:immunology*; D006801:Humans; D007122:Immunoelectrophoresis; D008297:Male
chemical_list: D000941:Antigens; D005164:Factor IX