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]:  Identification of a novel cyclosporin - sensitive element in the human tumor necrosis factor alpha gene promoter .
[EX A]: tumor necrosis factor

[EX Q]:  Accelerated spontaneous thymocyte death in the absence of TCF - 1 correlates with aberrantly low expression of the anti - apoptotic protein Bcl - x ( L ) .
[EX A]: TCF - 1

[EX Q]:  Pterin carbinolamine dehydratase / dimerization cofactor of HNF1 ( PCD / DCoH ) is a protein that has a dual function .
[EX A]:
PCD / DCoH