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Effect of IONPs and SiNPs on SOD and CAT activity of P. vulgaris grown in different concentrations of Cd. Here IONPs, SiNPs, Cd0, Cd1, Cd2, and Cd3 indicate iron oxide nanoparticles, silicon nanoparticles, 0 mM CdCl2, 1 mM CdCl2, 1.5 mM CdCl2, and 2 mM CdCl2. Different letters indicate significant difference among the treatments (P ≤ 0.05).
