title: Letter: Hepatitis-B antigen in saliva and semen.
mesh_terms: D002353:Carrier State / Q000276:immunology; D005260:Female; D006511:Hepatitis B Antigens / Q000302:isolation & purification*; D006801:Humans; D008297:Male; D011863:Radioimmunoassay; D012463:Saliva / Q000276:immunology*; D012661:Semen / Q000276:immunology*
chemical_list: D006511:Hepatitis B Antigens