Fig. 8
From: Role of PM2.5 in the development and progression of COPD and its mechanisms
Effect of PM2.5 and cigarette smoke exposure on airway wall remodeling. a Photomicrographs of peribronchial collagen and fibronectin deposition in lung tissue induced by chronic exposure to PM2.5 with or without CS (200X). b The assessment of peribronchial collagen deposition in lung tissue induced by chronic exposure to PM2.5 with or without CS. c Semiquantitative assessment of fibronectin protein expression using Image-Pro Plus. Results were expressed as means± SD (n = 6). *P < 0.05, ** P < 0.01, *** P < 0.001 vs control group; #P < 0.05, ## P < 0.01, ### P < 0.001 vs PM2.5 + CSE-exposed group