Figure 2.

Effect of H₂S inhalation on histopathological appearance, lung edema, permeability, and pulmonary function in rats. Values shown are mean±S.E.M (N = 10). a-e, H&E staining of lung; f, lung injury score; g, lung W/D weight ratio; h, Evans blue leakage amounts; i, peak expiratory flow (PEF); j, maximal mid-expiratory flow (MMF). ^#P < 0.05 compared to Control; ^&P < 0.05 compared to the CS group. CS: cigarette smoke; CS + H₂S: cigarette smoke and hydrogen sulfide; H₂S: hydrogen sulfide. (A color version of this figure is available in the online journal.)