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.

An attempt to correlate receptor levels with clinical responsiveness demonstrated that glucocorticoid receptor determination might be of value in patients with lymphoid malignancies but probably not in patients with other leukemias .
glucocorticoid receptor

This suggests the association of E2 - receptor expression with control of growth rather than cell maturation .
E2 - receptor

The emerging theme is one of cell - type - specific regulation , affecting not only the functional activation of transcription factors but also their access to appropriate regions of DNA .
transcription factors