Fig. 6

The inhibitory rates of the four compounds against H1N1 influenza virus determined by Real-Time PCR assay regarding to the post-exposure antiviral activity. According to the one-way ANOVA followed by Tukey’s multiple comparisons test, there were significant differences among the groups (p < 0.0001), except for ZnO-NPs vs. ZnO-PEG-NPs at the concentration of 25 μg/mL. Error bars represent the confidence interval for the mean (n = 3) at the 95% level