title: Hepatitis B surface antigen testing: the Blood Products Laboratory radioimmunoassay (BPL/RIA) system.
mesh_terms: D006514:Hepatitis B Surface Antigens / Q000032:analysis*; D011863:Radioimmunoassay / Q000379:methods; D011933:Reagent Kits, Diagnostic
chemical_list: D006514:Hepatitis B Surface Antigens; D011933:Reagent Kits, Diagnostic