title: Immunologic deficiency syndromes.
mesh_terms: D001402:B-Lymphocytes / Q000276:immunology; D006801:Humans; D007111:Immunity, Cellular; D007153:Immunologic Deficiency Syndromes; D008214:Lymphocytes / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology