Figure 5. Effect of H3N2 (X-31) influenza A virus infection on viral titer and body weight in wild type (WT) and Nox2^−/y mice.

Mice were treated with 1×10⁴ PFU of the low virulence H3N2 strain of influenza A virus and (A) viral titer determined 3 days post infection and (B) body weight recorded for up to 7 days post infection. Data are shown as mean ± SD for 6–8 mice per group. *P<0.05 vs WT mice (Students' unpaired t test).