title: Serial surveys for hepatitis B antigen in an institution for the mentally retarded: a detection of the antigen in saliva.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D005260:Female; D006386:Hemagglutination Tests; D006510:Hepatitis B Antibodies / Q000032:analysis; D006511:Hepatitis B Antigens; D006801:Humans; D008607:Intellectual Disability / Q000276:immunology*; D008297:Male; D011863:Radioimmunoassay; D012112:Residential Facilities; D012463:Saliva / Q000276:immunology*
chemical_list: D006510:Hepatitis B Antibodies; D006511:Hepatitis B Antigens