Department of Pneumology Ruijin Hospital SSMU Shanghai 200025 China;
Department of Pneumology Ruijin Hospital SSMU Shanghai 200025 China;
Department of Pneumology Ruijin Hospital SSMU Shanghai 200025 China;
Department of Pneumology Ruijin Hospital SSMU Shanghai 200025 China;
Department of Pneumology Ruijin Hospital SSMU Shanghai 200025 China;
Department of Pneumology Ruijin Hospital SSMU Shanghai 200025 China;
smoke; chronic bronchitis; inflammation cells; animal model; myeloperoxidase; pathological evaluation;