Lung lavage analysis of WT and apoE−/− mice exposed to 72 h of 100% O2. a Lavage protein (mg/ml) (WT Air = 0.07 ± 0.005, apoE−/− Air = 0.07 ± 0.014, WT O2 = 2.47 ± 0.28, apoE−/− O2 = 3.42 ± 0.35). b Lavage neutrophils (WT Air = 0.0 ± 0.0, apoE−/− Air = 0.42 ± 0.032, WT O2 = 0.42 ± 0.28, apoE−/− O2 = 7.23 ± 2.07). c Lavage cytokines (IL-6, TNF-α, KC, and MCP-1). n = 6–7 animals/group. * p < 0.05 vs. WT; $ p < 0.05 vs. Air.