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.

[Q]:  A nonpeptidyl small molecule SB 247464 , capable of activating granulocyte - colony - stimulating factor ( G - CSF ) signal transduction pathways , was identified in a high - throughput assay in cultured cells .
[A]: G - CSF


[Q]:  In addition , Scatchard plot analysis of 125I - labeled IL - 2 showed that Dex did not affect the binding of IL - 2 , thus suggesting that inhibition is due to a postreceptor effect .
[A]: IL - 2


[Q]:  This system should prove useful in studying the molecular mechanisms by which 1 , 25 - ( OH ) 2D3 acts to inhibit T cell activation and subsequent IL 2 production .
[A]:
IL 2