title: Australian antigen in reference sera.
mesh_terms: D006511:Hepatitis B Antigens; D006801:Humans; D005779:Immunodiffusion; D007122:Immunoelectrophoresis; D007757:Laboratory Infection / Q000517:prevention & control*; D011233:Precipitin Tests; D011863:Radioimmunoassay
chemical_list: D006511:Hepatitis B Antigens