Figure 2.
The expression of S100A9 protein in CRC. (A) Representative IHC staining for S100A9 expression in tumor tissues and adjacent normal tissues from three CRC patients. Blank scale bars = 100 μm. (B) Western blot analysis of S100A9 expression in five randomly selected CRC patients' tumor tissues and adjacent normal tissues. N, adjacent normal tissues; T, tumor tissues. β-actin served as a loading control. (C) ELISA analysis of serum S100A9 level from HC (n = 30) and CRC (n = 52) patients. Data represents the mean±SD. **p < 0.01, ***p < 0.001.