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:

Question

Quizplus · Accepted Answer

The common F1F1F1S1F1F1F10 chain protein is shared by receptors for the interleukins (IL)-2,IL-4,IL-7,IL-9,and IL-15.

A 7-Month-Old Boy Is Evaluated in the Clinic for Recurrent