Fig. 3From: Experimental infection of pigs with H1 and H3 influenza A viruses of swine by using intranasal nebulizationViral titers (mean ± 1 standard deviation) from nasal swabs of pigs inoculated with various IAVs-S by nebulization. No virus was shed from the control pigs throughout the experiment or from the inoculated pigs after 10 dpi. *, Significant difference (P < 0.05, Tukey HSD test) between groups on the same day; the dashed line indicates the limit of detection (101.1TCID50/ml)Back to article page