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]:  Macrophage stimulation with Murabutide , an HIV - suppressive muramyl peptide derivative , selectively activates extracellular signal - regulated kinases 1 and 2 , C / EBPbeta and STAT1 : role of CD14 and Toll - like receptors 2 and 4 .
[A]: C / EBPbeta


[Q]:  This octanucleotide , in reverse orientation , is also found in all light chain variable region ( VL ) genes , and in the immunoglobulin heavy chain transcriptional enhancer .
[A]: transcriptional enhancer


[Q]:  This signaling pathway may be crucial for the control of B - cell differentiation and antibody response and has implications for the regulation of other POZ / zinc finger transcription factors in other tissues .
[A]:
transcription factors