Hepatitis and the Australia antigen.
D000293:Adolescent; D000328:Adult; D000941:Antigens; D001315:Australia; D002648:Child; D002675:Child, Preschool; D004314:Down Syndrome / Q000276:immunology; D005260:Female; D006506:Hepatitis A / Q000276:immunology*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male
D000941:Antigens