Fig. 1. MTS assay for cell viability. A: At 10 µM/L and 20 µM/L concentrations of curcumin, cell viabilities showed minimal decreases (10 µM/L: 80.8%, 20 µM/L: 78.2%). B: The cell viabilities at 10 µM/L and 20 µM/L curcumin for 6 hours were 93.9% and 90.5%, respectively. ^*p<0.05, ^**p<0.001 compared to the control group.