Figure 4. Small interfering RNA knockdown of REGγ decreases cellular inva-siveness. Parental cells (mock), cells treated with scrambled vector (pSV) and cells treated with proteasome activator (pREGγ) were added to transwell inserts and the number of invasive cells was observed and counted. Data are reported as means ± SD of three independent experiments. ^*P < 0.05 compared to other groups (ANOVA).