title: Hepatitis B antigen and antibody in a male homosexual population.
mesh_terms: D000914:Antibodies, Viral / Q000032:analysis*; D006510:Hepatitis B Antibodies / Q000032:analysis*; D006511:Hepatitis B Antigens / Q000032:analysis*; D006716:Homosexuality; D006801:Humans; D008297:Male; D011863:Radioimmunoassay
chemical_list: D000914:Antibodies, Viral; D006510:Hepatitis B Antibodies; D006511:Hepatitis B Antigens