Laboratory diagnosis of immunodeficiency disease.
D000293:Adolescent; D000328:Adult; D000917:Antibody Formation; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007111:Immunity, Cellular; D007153:Immunologic Deficiency Syndromes / Q000175:diagnosis* / Q000276:immunology; D007223:Infant; D007231:Infant, Newborn