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.

The glucocorticoid target tissues that have been examined ( circulating mononuclear lymphocytes and cultured skin fibroblasts ) have normal concentrations of glucocorticoid receptors with decreased affinity for dexamethasone .
glucocorticoid receptors