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]:  We have established optimal conditions for the measurement of glucocorticoid receptors ( GR ) in human white cells using a whole - cell binding assay with [ 3H ] dexamethasone as the ligand , and the subsequent determination of the GR content in normal human lymphocytes and in leukemic cells of patients with various forms of acute and chronic leukemia .
[A]: glucocorticoid receptors


[Q]:  Friend of GATA ( FOG ) proteins regulate GATA factor - activated gene transcription .
[A]: GATA factor


[Q]:  A direct correlation was found between the magnitude of glucocorticoid - mediated increase of GS activity and the cellular levels of specific glucocorticoid receptors assayed in the same cell specimen .
[A]:
glucocorticoid receptors