Fig. 1
From: Acute exposure to wood smoke from incomplete combustion - indications of cytotoxicity
Immunohistochemical staining of bronchial mucosal biopsies. All photos have been taken at the same magnification (×40). Bar represents 50 μm. in order from the top and downwards the four panels demonstrate: a/ A significant increase in submucosal and b/ epithelial CD3+ lymphocytes (p < 0.01 and <0.05 respectively), together with c/CD8+ cells in the epithelium (p < 0.05) after exposure to wood smoke vs. filtered air. Panel d/ displays that mast cells were significantly increased in the submucosa (p < 0.05) after wood smoke exposure. There was no neutrophilic infiltration in the bronchial biopsies (data not shown)