title: Detection of hepatitis B surface antigen among blood donors--a comparative study on methods.
mesh_terms: D000328:Adult; D001782:Blood Donors; D003378:Counterimmunoelectrophoresis; D006386:Hemagglutination Tests; D006514:Hepatitis B Surface Antigens; D006801:Humans; D005779:Immunodiffusion; D008297:Male; D008875:Middle Aged
chemical_list: D006514:Hepatitis B Surface Antigens