Health / Medical Topics |
Common Variable Immunodeficiency
Definition 1
A primary immunodeficiency characterized by low levels or absence of all the immunoglobulin classes and lack of B-lymphocytes or plasma cells. It results in recurrent bacterial infections. Complications include autoimmune phenomena and cancer development. (NCI Thesaurus)
Definition 2
Heterogeneous group of immunodeficiency syndromes characterized by hypogammaglobulinemia of most isotypes, variable B-cell defects, and the presence of recurrent bacterial infections. (NLM, Medical Subject Headings)
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