title: Hepatitis-associated (Australia) antigen and Down's syndrome.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002674:Child, Institutionalized; D002675:Child, Preschool; D003428:Cross Infection; D004314:Down Syndrome / Q000276:immunology*; D005190:Family; D005260:Female; D005581:Foster Home Care; D006509:Hepatitis B / Q000276:immunology; D006511:Hepatitis B Antigens / Q000032:analysis*; D006801:Humans; D005779:Immunodiffusion; D007223:Infant; D007231:Infant, Newborn; D008297:Male
chemical_list: D006511:Hepatitis B Antigens