Figure 1

Immunohistochemical analysis of MTA1 protein expression in nasopharyngeal carcinoma tissues. MTA1 protein expression was mainly localized within the nucleus. (A) Negative staining (400×); (B) weak staining: light yellow (400×); (C) moderate staining: yellow brown (400×); (D) strong staining: brown (400×); (E) MTA1 protein expression was upregulated in the nasopharyngeal carcinoma tissue (solid arrow) compared to the adjacent noncancerous epithelial cells (hollow arrow).