Fig. 5

Quantitative analysis of inhibitory effects of Gel-FeS NPs on PRRSV infection. A Titers of PRRSV treated with different concentrations of Gel-FeS NPs (0‒340.0 µg/mL) detected by plaque reduction assay. B The content of ORF7 gene in PRRSV genome treated with different concentrations of Gel-FeS NPs (0‒340.0 µg/mL) was detected by RT-qPCR. Error bars represent the standard deviation from three repeated experiments. Control group: the MARC-145 cells were not treated with nanomaterials, but inoculated with PRRSV. The mean value was calculated by the t test (mean ± SD, n = 3). *p < 0.05, **p < 0.01, ***p < 0.001 indicate significant differences compared with the indicated group