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]:  Using unique PcG - specific antisera and triple immunofluorescence , we found that mature resting peripheral T cells expressed BMI - 1 , whereas dividing blasts were EZH2 ( + ) .
[EX A]: BMI - 1

[EX Q]:  We used several agents active on signal transduction pathways in cytokine expression , such as the protein kinase C inhibitor staurosporin , antioxidant agents including N - acetyl cysteine ( NAC ) and pyrrolidine dithiocarbamate ( PDTC ) , and p38 mitogen - activated protein kinase ( MAPK ) inhibitor SB203580 .
[EX A]: protein kinase C

[EX Q]:  To study variations in glucocorticoid receptor levels during the cell cycle , we have separated mitogen - stimulated human peripheral lymphocytes and rat lymph node cells by unit gravity sedimentation and measured glucocorticoid binding in the resultant fractions .
[EX A]:
glucocorticoid receptor