Syndromes in which there is a deficiency or defect in the mechanisms of immunity, either cellular or humoral.

Synonyms: Immunological Deficiency Syndromes, Deficiency Syndromes, Immunologic, Antibody Deficiency Syndrome, Deficiency Syndromes, Immunological, Deficiency Syndrome, Antibody, Deficiency Syndromes, Antibody, Syndrome, Immunologic Deficiency, Immunological Deficiency Syndrome, Immunologic Deficiency Syndromes, Syndromes, Immunologic Deficiency, Syndrome, Antibody Deficiency, Antibody Deficiency Syndromes, Syndromes, Antibody Deficiency, Deficiency Syndrome, Immunological, Immunologic Deficiency Syndrome, Deficiency Syndrome, Immunologic, Syndromes, Immunological Deficiency, Syndrome, Immunological Deficiency