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Significant changes in CXCR2 were measured only in the left bronchus (*P<0.05 from 0 h and ##P<0.01 from right bronchus). Frozen sections of left bronchus 6 h after LPAL show co-localization of anti-CXCR2 (red) with RECA-1+ subepithelial blood vessels (green: 100× original magnification, and inset 600× original magnification).
