Fig. 4
From: The effect of cadmium on the growth and antioxidant response for freshwater algae Chlorella vulgaris
Contents of SOD and CAT of C. vulgaris cultivated 18 days C. vulgaris in Cd(II) medium. Different lowercase letter (a–e) indicate significant differences between treatments exposed to increasing metal concentration (p < 0.05). Values in columns followed by the same letter(s) are not significantly different according to Tukey’s test (p < 0.05)