title: [Survey for hepatitis B antigen in an institution for mentally retarded: role of saliva in the transmission of HBV (author's transl)].
mesh_terms: D000293:Adolescent; D000328:Adult; D002353:Carrier State / Q000276:immunology; D002648:Child; D002675:Child, Preschool; D006233:Persons with Disabilities; D005260:Female; D006509:Hepatitis B / Q000635:transmission*; D006511:Hepatitis B Antigens / Q000032:analysis*; D006801:Humans; D007564:Japan; D008297:Male; D012112:Residential Facilities; D012463:Saliva / Q000276:immunology*
chemical_list: D006511:Hepatitis B Antigens