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.

 Here , we investigated how CD28 costimulation functions to allow TCR - triggered resting T cells to acquire IL - 12 responsiveness .
IL - 12

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

 We show here that Bright has multiple contextual requirements to function as a transcriptional activator .

transcriptional activator