title: Concentration of hepatitis-B antigen from clinical preparations of II, VII, IX and X by polyethylene glycol, to enhance detection and removal.
mesh_terms: D001779:Blood Coagulation Factors / Q000032:analysis*; D005164:Factor IX / Q000032:analysis; D005167:Factor VII / Q000032:analysis; D005170:Factor X / Q000032:analysis; D006505:Hepatitis / Q000209:etiology; D006511:Hepatitis B Antigens / Q000302:isolation & purification*; D006801:Humans; D011092:Polyethylene Glycols; D011516:Prothrombin / Q000032:analysis; D011863:Radioimmunoassay; D065227:Transfusion Reaction
chemical_list: D001779:Blood Coagulation Factors; D006511:Hepatitis B Antigens; D011092:Polyethylene Glycols; D005167:Factor VII; D011516:Prothrombin; D005164:Factor IX; D005170:Factor X