title: Subtypes of hepatitis B surface antigen (HBsAg) in blood donors in Kumamoto, Japan.
mesh_terms: D001782:Blood Donors; D000939:Epitopes; D006511:Hepatitis B Antigens / Q000145:classification*; D006801:Humans; D005779:Immunodiffusion; D007122:Immunoelectrophoresis; D007564:Japan; D012703:Serotyping
chemical_list: D000939:Epitopes; D006511:Hepatitis B Antigens