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. 2019 May 7;10:997. doi: 10.3389/fmicb.2019.00997

FIGURE 5.

FIGURE 5

Oxidase-like activity of PtNPs and Pt4+ ions at different concentrations on 2,6-DMP, TMB and ABTS across different pH’s, expressed as the mean ± SD. Columns with different letters [capital letters (A,B) show differences between pH’s; lower case (a,b,c) show differences between PtNPs concentration] (ANOVA, p < 0.05, n = 3) and ∗∗∗ symbolizes statistically significant differences (p < 0.05), (p < 0.01), and (p < 0.001), respectively.