CAT and melanoma: The addition of hinokitiol to the culture of melanoma malignant cells resulted in a statistically significant decrease in superoxide dismutase activity by approximately 30% C32; 20% COLO 829 (p = 0.023 C32; p = 0.014 COLO 829); glutathione peroxidase by 35% C32 and 30% COLO 829 (p < 0.001 C32; p = 0.012 COLO 829); and catalase by 27% for C32 (p = 0.008) cell culture and 44% for COLO 829 (p < 0.001) cell culture compared to the control cell cultures.