Detection of NRF2 and Keap1 protein expression assessed by immunohistochemical staining in representative specimens of normal cervical epithelia, CIN and CSCC, respectively.

<p>A: Expression of NRF2 in normal cervical epithelia with weak cytoplasm staining; B: Moderate expression of NRF2 protein in CIN tissue; C: Strong nucleus expression of NRF2 proteins in CSCC tissue; D: Expression of Keap1 in normal cervical epithelia with Strong cytoplasm staining; E: Moderate expression of Keap1 protein in CIN tissue; F: weak expression of Keap1 proteins in CSCC tissue. (original magnification, × 200).