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: Quantitative determination of glucocorticoid receptor levels in acute lymphoblastic leukemia may be of value both as an independent prognostic variable and in suggesting which patients should receive glucocorticoid therapy .

A: glucocorticoid receptor
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Q: The mechanism of reducing NO production resulting from inhaled NO may involve , in part , the activities of reactive oxygen species and / or nuclear factor - kappaB .

A: nuclear factor
****
Q: In agreement with the evidence of a coordinate transcription of the HLA - D genes in these cell lines , we have shown the constitutive expression of CIITA ( class II transactivator ) transcripts , CIITA being known as the master switch of MHC class II expression .

A:
class II transactivator
****