Fig. 2
From: The effect of cadmium on the growth and antioxidant response for freshwater algae Chlorella vulgaris
Assimilation pigment composition of C. vulgaris cultivated for 18 days in Cd(II) medium. Different lowercase letter (a–c) 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)