Effect of CXCR3 deficiency on CD8+ T cells and CD4+ T cell infiltration into airways and lungs in CXCR3 KO and WT mice after CS exposure. Panels A and B, representative histograms showing expression of CD4+ T cells and CD8+ T cells in BALF and Lung. Panels C and D, pooled data showing the percentage of CD4+ T cells and CD8+ T cells in BALF and lung. Results are expressed as means ± SEM, n = 4 separate experiments, ***, p < 0.001. The data presented are from one representative of four independent experiments.