Fig. 1
From: The effect of cadmium on the growth and antioxidant response for freshwater algae Chlorella vulgaris
Cells density (105 cells mL−1) of C. vulgaris under various Cd(II) concentrations. 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)