title: Studies on human factor IX by immunoelectrophoretic and immunodiffusion methods.
mesh_terms: D000906:Antibodies; D000941:Antigens; D001665:Binding Sites; D002118:Calcium; D005164:Factor IX / Q000276:immunology*; D006801:Humans; D005779:Immunodiffusion; D007123:Immunoelectrophoresis, Two-Dimensional; D011516:Prothrombin / Q000276:immunology
chemical_list: D000906:Antibodies; D000941:Antigens; D011516:Prothrombin; D005164:Factor IX; D002118:Calcium