Fig 7. Effect of influenza on BAL fluid levels of IFN-γ, IFN-α, TNF-α, and MCP-1 in Ctsl^-/- and Ctsl^+/+ mice.

Levels were quantified by ELISA in BAL fluid obtained 3, 7 and 14 days after initial infection. Data are means ± SEM; N = 4–5; *P < 0.05 (infected Ctsl^-/- versus infected Ctsl^+/+ mice), by one-way ANOVA.