Figure 1

Representative images of immunohistochemical staining of SIRT1, N1IC and snail in breast carcinoma tissues. All markers are primarily expressed in the nuclei of the tumor cells. (original magnification × 400). A), B), and C): Low expression of SIRT1 and high expression of N1IC, Snail in consecutive slides and co-localization. D), E), and F): High expression of SIRT1 and low expression of N1IC, Snail in consecutive slides and co-localization. A) and D): Low and high expression of SIRT1. B) and E): High and low expression of N1IC. C) and F): High and low expression of Snail.