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.

 Partial inhibition of p50 and p105 expression by NF - kappa B1 antisense oligonucleotides significantly reduced T - cell proliferation and CD25 / IL - 2R alpha cell surface expression .
IL - 2R

 The pattern of IFN - gamma staining appeared to be intracellular in mononuclear lymphoid cells .
IFN - gamma

 Upon hIL - 4 stimulation , Y497F worked as well as the WT hIL - 4Ralpha in driving Th2 differentiation , as measured by Gata3 up - regulation and IL - 4 production .

IL - 4