[Immunological abnormalities in leukemia in children].
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D006801:Humans; D006968:Hypersensitivity, Delayed / Q000276:immunology; D007938:Leukemia / Q000276:immunology*; D007945:Leukemia, Lymphoid / Q000276:immunology; D015470:Leukemia, Myeloid, Acute / Q000276:immunology