Lung sections of mice vaccinated with OprF-pulsed DCs and infected with clinical isolate. Lung sections A-B representing histologic pictures of pneumonia similar to those described in fig. 4 are shown (red arrow: bronchial epithelium; blue arrow: neutrophilic infiltrate). Lung sections from mice vaccinated with n-OprF-pulsed DCs (C-D) and His-OprF-pulsed DCs (E-F) show a lung in which inflammatory cell recruitment was greatly reduced. Lung sections were hematoxylin-eosin stained. A-C-E magnification ×10. B-D-F magnification ×40.