<prompt> Ataxaia telengiectasia is associated with all of the following except :Recurrent sinopulmonary infectionsLymphatic reticular malignanciesIncreased fraction of IgA immunoglobulinsInsulin resistance  <response>: Answer is C Increased fraction of IgA immunoglobulins : Although 8 lymphocytic development is normal most patients are deficient in serum IgE and IgA - Harrison 