Protection from TRALI is associated with decreased levels of plasma MIP-2 and decreased pulmonary PMN in both SPF and BF mice with antibiotic-induced gut flora depletion. (A) Plasma MIP-2 and (B) pulmonary PMN levels in indicated mouse groups. For the statistical analyses, only significant comparisons of interest are shown. Statistical analysis was performed with 1-way ANOVA with a Tukey post hoc test. Each dot represents 1 mouse; error bars represent SD. Figure panels show combinatorial data from 3 experiments. *P < .05, **P < .01, ****P < .0001.