Multiple Choice
A 7-month-old boy is evaluated in the clinic for recurrent bacterial infections.His tonsils are not visible on physical examination.Serum immunoglobulin A (IgA) and IgG levels are markedly decreased,and serum IgM levels are slightly below normal.The gene identified in this patient plays a critical role in receptor binding to all of the following ligands EXCEPT:
A) Interleukin (IL) -2
B) IL-4
C) IL-7
D) IL-12
E) IL-15
Correct Answer:

Verified
Correct Answer:
Verified
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