Fig. 1
From: Protective effect of hydrogen-saturated saline on acute lung injury induced by oleic acid in rats
Visual observation and histopathological examination of lung tissue in the control, ALI, ALI + HSS (iv), and ALI + HSS (ip) groups (n = 10 in each group). Compared with the control group (a, b), rat lung tissue surface was rough and bleeding under the naked eye (c) and serious injury was observed under optical microscope (d) in the ALI group. However, after treatment with HSS, rat lung tissue surface showed milder smooth and pink pulmonary tissue surface under the naked eye (e, g) and lung injury had a substantial improvement under optical microscope (f, h) in the ALI + HSS (iv) and ALI + HSS (ip) groups, and all of these changes were alleviated in the ALI + HSS (ip) group rats than in the ALI + HSS (iv) group rats. Original magnification; HE staining × 100. The arrowheads point to the bleeding area. ALI acute lung injury, HSS hydrogen-saturated saline