Figure 4From: The 2009 pandemic (H1N1) viruses isolated from pigs show enhanced pathogenicity in miceCytokine production of lungs in BALB/c mice infected with different H1N1/2009 viruses. On 3, 5, 7 and 9 dpi respectively, the lung homogenates from mice inoculated with the four 2009/H1N1 pig isolates (3/10, F9/10, 5/10 and 6/10), a human isolate designed LN/09 and control mice were prepared and tested for the production of cytokines IL-1β, IL-6, IL-10, IL-12 (p40), TNFα and IFN-γ by ELISA assay. The results are presented as mean ± SD (n = 3) of protein levels.The statistical analysis at each time point was performed compared to data for LN/09 virus or other viruses with lower cytokine levels (* p < 0.05).Back to article page