Figure 6: The effects of NK-lysin on protein expression levels in SMMC-7721 cells. Cells of different groups were incubated for 72 hrs, and Western blot analysis detected the levels of protein expression. β-actin was used as an internal control (a). Relative protein expression of β-catenin (b) and relative protein expression of MMP-2 (c). The values are presented as the mean ± SEM (n=3), P<0.05, P<0.01, and P<0.001 vs. NT Ctrl group.