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. 2021 Apr 8;11:7748. doi: 10.1038/s41598-021-87147-5

Figure 4.

Figure 4

Activities of antioxidant enzymes superoxide dismutase (A), catalase (B), ascorbate peroxidase (C), dehydroascorbate reductase (D), glutathione reductase (E) and glutathione reductase (F) in U. lactuca cultivated without anthracene (open circles) and with 5 μM anthracene (black circles) for 0–72 h. Activities of antioxidant enzymes are expressed as micromole per minute per gram of fresh tissue (FT) and time in hours. Symbols represent mean values of three independent experiments ± SD. Letters indicate significant differences among experiments (P < 0.05).