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The influence of the expression of mRNA of oxidative stress related genes induced by 20 nm PVP-AgNPs in C. elegans. A) ctl-1, ctl2, ctl-3, isp-1, clk-1, mev-1, sod-4, sod-5. B) sod-1, sod-2, sod-3, gas-1. Experimental data were represented by mean ± SD in three parallel experiments. Compared with the control group, *P < 0.05. AgNPs, silver nanoparticles; PVP, polyvinylpyrrolidone; HPMC, hydroxypropyl methyl cellulose.
