<prompt> Humoral immunodeficiency is suspected in a patient and he is under investigation. Which of the following infections would not be consistent with the diagnosis:GiardiasisPneumocystis carinii pneumoniaRecurrent sinusitisRecurrent subcutaneous abscesses  <response>: Pneumocystis carnii pneumonia is associated with deficient cell-mediated immunity and not with humoral immunodeficiencyref: Harrisons 18e p2699 