A 5-Year-Old Boy with Severe, Recurrent Respiratory Infections Is Undergoing

A 5-year-old boy with severe, recurrent respiratory infections is undergoing evaluation.  Sputum studies reveal intracellular bacteria.  Further testing shows that the patient's T cells lack the IL-12 receptor.  Supplementation with which of the following substances would most likely improve this patient's condition?

A) Early complement components
B) GM-CSF
C) Immunoglobulins
D) Interferon-gamma
E) Interleukin-4

Correct Answer:

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