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.

Input: Consider Input:  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 .

Output: glucocorticoid receptors


Input: Consider Input:  Together , these results suggest that activated human T cells , whether lupus - derived or normal - derived , contain biologically active ERalpha proteins .

Output: ERalpha proteins


Input: Consider Input:  Our findings rather suggest a TCF - 1 - dependent , cell autonomous effect on the acquisition of multiple Ly - 49 receptors .


Output: TCF - 1