title: Subtyping of hepatitis-associated antigen (HB-Ag); simplified technique with counterelectrophoresis.
mesh_terms: D004586:Electrophoresis; D000939:Epitopes; D006382:Hemadsorption; D006511:Hepatitis B Antigens / Q000145:classification; D006515:Hepatitis B virus / Q000145:classification*; D006801:Humans; D007106:Immune Sera; D005779:Immunodiffusion; D008722:Methods
chemical_list: D000939:Epitopes; D006511:Hepatitis B Antigens; D007106:Immune Sera