In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.

 Using enhancer - reporter constructs , IL - 4 specifically down - regulated the NFIL - 2B element .
IL - 4

 The characteristics of these two factors are consistent with their involvement in GM - CSF induction .
GM - CSF

 In contrast to B cells from XID mice , B cells from JAK3 knockout mice showed a normal STAT5A phosphorylation response to anti - IgM stimulation .

anti - IgM