Fig. 2

Increased expression levels of the ClC-3 protein in metastasis positive lymph nodes. a, b Images from lymph node metastasis positive (LP) and lymph node metastasis negative (LN) tissues showing the ClC-3 immunohistochemical staining. The main and inserted images were taken by using a × 40 objective lens. Scale bars, 50 μm. c Densitometric analysis of the ClC3 protein levels of LP and LN tissues detected by the immunohistochemistry. The data in b are shown as the mean ± SD. **p < 0.01