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CHaPTEr 35  Primary T-Cell Immunodeficiencies            508.e1


              M u LTIPLE-CHOICE Q u ESTIONS

           1.  Each of these comments  about T-cell deficiencies (severe    B. In vitro responses to mitogens can be normal in some
             combined immunodeficiency/combined immunodeficiency       cases.
             [SCID/CID]) are TRUE, except:                           C. Evaluation of natural killer (NK) cell numbers and function
              A. Patients may present in infancy with failure to thrive.  can be beneficial for diagnosis.
              B. The thymus always appears dysplastic.               D. Serum immunoglobulin levels can be normal.
              C. Malignancy could be the sole presenting feature.    E.  CH50 does not contribute to the diagnosis.
              D. Clinical manifestations may first arise during late childhood   3.  For which of the following conditions is hematopoietic stem
               or adolescence.                                      cell transplantation not recommended?
              E.  Patients may present with severe hypocalcaemia.
                                                                     A. FOXP3 deficiency
           2.  Which of the following is INCORRECT?                  B. Ataxia telangiectasia
              A. All patients who present with a SCID phenotype can be    C. Major histocompatibility complex (MHC) class II deficiency
               detected at birth by T-cell receptor excision circle (TREC)    D. Adenosine deaminase (ADA) deficiency
               analysis                                              E.  DOCK2 deficiency
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