Figure 4.

Antioxidant enzymes activity: (a) catalase (CAT), (b) glutathione reductase (GR), and (c) glutathione peroxidase (GPx) in HT-29 cells exposed to IC₅₀ of CB83, THC, CBD, and 5FU. Data are representative of three independent experiments. For each treatment, the experimental measurements (left side with circle marker) and mean values ± S.D. (right side) are reported. Mean value markers represent the significance vs. control (C): triangle for p < 0.05, diamond for p < 0.01, and square for p < 0.001; hyphen if dataset is not significant.