Fig. 4

Cytotoxicity of ZnO-NPs (a), ZnO-PEG-NPs (b), polyethylene glycol (c), and oseltamivir (d) on MDCK-SIAT1 cells. * Statistically significant (pā<ā0.05). ** Statistically significant (pā=ā0.003). ** Statistically significant (pā=ā0.0005). **** Highly statistically significant (pā=ā0.0001). Error bars represent the confidence interval for the mean (nā=ā3) at the 95% level