Fig. 1
From: Proteome analysis of urinary biomarkers in a cigarette smoke-induced COPD rat model
Clinical characterization of the cigarette smoke-induced COPD rat model. a Body weight changes in the CS-induced COPD rat model (n = 12, *p < 0.01); b Pulmonary function in rats (n = 10, *p < 0.01); d HE staining of alveolar tissue at an original magnification 200 × ; d AB-PAS staining for mucus expression in the epithelium of the bronchus at an original magnification 200 ×