title: Frequency of antibody to hepatitis-associated antigen as measured by a new radioimmunoassay technique.
mesh_terms: D000818:Animals; D000906:Antibodies / Q000032:analysis*; D001782:Blood Donors; D001803:Blood Transfusion; D006511:Hepatitis B Antigens; D006515:Hepatitis B virus / Q000276:immunology*; D006801:Humans; D007106:Immune Sera; D007456:Iodine Isotopes; D008722:Methods; D011233:Precipitin Tests; D011863:Radioimmunoassay; D012756:Sheep
chemical_list: D000906:Antibodies; D006511:Hepatitis B Antigens; D007106:Immune Sera; D007456:Iodine Isotopes