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.

[EX Q]: Pax5 appears to mediate B - lineage commitment by repressing the transcription of non - B - lymphoid genes and by simultaneously activating the expression of B - lineage - specific genes .
[EX A]: - B

[EX Q]: Transient transfection analysis further confirmed the Tax transactivation of the TR3 / nur77 promoter but not the NOR - 1 promoter in different cell types .
[EX A]: TR3 / nur77

[EX Q]: This element directs lymphoid - specific transcription even in the presence of viral enhancers .
[EX A]:
viral enhancers