Fig. 8From: Elucidating the phytotoxicity thresholds of various biosynthesized nanoparticles on physical and biochemical attributes of cottonEffect of different concentrations of zinc oxide, iron oxide, copper, and silver nanoparticles (0, 50, 75, and 100 ppm) on catalase activity (A), peroxidase (B), superoxide dismutase (C), and ascorbate peroxidase (D) in cotton plants. Values show the means of 3 replicates ± standard error (n = 3)Back to article page