Lavage analysis of WT and apoE−/− animals exposed to acid aspiration and ex vivo mechanical ventilation. a Lavage protein (WT Non-Vent Air = 0.13 ± 0.01, apoE−/− Non-Vent = 0.15 ± 0.01, WT Non-Vent Acid = 0.72 ± 0.01, apoE−/− Non-Vent Acid = 0.55 ± 0.1, WT Vent Air = 0.60 ± 0.02, apoE−/− Vent Air = 0.42 ± 0.01, WT Vent Acid = 1.30 ± 0.21, apoE−/− Vent Acid = 1.67 ± 0.32). b Lavage neutrophils (WT Non-Vent Air = 7.0 ± 2.1, apoE−/− Non-Vent = 5.7 ± 2.8, WT Non-Vent Acid = 13.6 ± 5.2, apoE−/− Non-Vent Acid = 6.6 ± 2.1, WT Vent Air = 23.1 ± 8.6, apoE−/− Vent Air = 70.6 ± 44.9, WT Vent Acid = 5.6 ± 1.0, apoE−/− Vent Acid = 20.3 ± 11.1). c Lavage cytokines. n = 6–7 animals/group. $ p < 0.05 for Acid vs. Air, Non-Vent.