title: Hepatitis B antigen in saliva.
mesh_terms: D002648:Child; D002675:Child, Preschool; D006511:Hepatitis B Antigens; D006801:Humans; D008607:Intellectual Disability / Q000276:immunology; D008854:Microscopy, Electron; D011863:Radioimmunoassay; D012463:Saliva / Q000276:immunology*
chemical_list: D006511:Hepatitis B Antigens