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]:  METHODS : Mice were injected intraarticularly with mBSA on day 0 and subcutaneously with recombinant human IL - 1beta on days 0 - 2 .
[A]: IL - 1beta


[Q]:  Core - binding factor beta ( CBFbeta ) is the non - DNA - binding subunit of the heterodimeric CBFs .
[A]: heterodimeric CBFs


[Q]:  Using enhancer - reporter constructs , IL - 4 specifically down - regulated the NFIL - 2B element .
[A]:
IL - 4