Figure 4. Cell viability assay by 3-(4,5-dimethylthiazolyl-2-)-2,5-diphenyltetrazoliumbromide (MTT). After transfection with Skp2 siRNA, cell viability was significantly decreased in cultured rLECs at days 6 and 10 compared with the vehicle control and blank control. The asterisk indicates p<0.05 versus the vehicle and blank controls, while the double asterisk indicates p<0.01 versus the vehicle and blank controls (n=32).