Figure 2. Systemic adaptive immune responses to VV are intact in IL-10−/− mice.
IL-10−/− and WT mice were VV-infected via skin scarification with 1×107 PFU. Single-cell suspensions of splenocytes were prepared 7 days later and fluorescently stained to identify the number of cells A) CD8+ and VV-pentamer+ and B) CD8+ and IFNγ+ (3–6 mice per group). C) Splenocytes were cultured at 106 cells/ml, and release of IFNγ, IL-6, IL-17, and IL-4 into the cell medium was measured by ELISA after 72 hours in culture (3–9 mice per uninfected group, 5–19 mice per infected group, mean ± SEM). * p < 0.05, ***p < 0.0005, by unpaired t test, two-tailed.