title: A serum antigen (Australia antigen) in Down's syndrome, leukemia, and hepatitis.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging; D002648:Child; D002675:Child, Preschool; D003582:Cytogenetics; D004314:Down Syndrome / Q000235:genetics / Q000276:immunology*; D005260:Female; D006506:Hepatitis A / Q000276:immunology; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007519:Isoantigens; D007938:Leukemia / Q000276:immunology*; D007945:Leukemia, Lymphoid / Q000276:immunology; D007951:Leukemia, Myeloid / Q000276:immunology; D008297:Male; D008875:Middle Aged; D014805:Vitamin B 12 / Q000097:blood
chemical_list: D007519:Isoantigens; D014805:Vitamin B 12