Fig. 6

In vivo therapeutic effects of inhaled PSLipos-NAC nanosystems on ALI. (A) The representative histological images of H&E-stained lung sections. The scale bar in the upper panel = 500 μm while that in the lower panel = 250 μm. (B) The lung injuries were accessed by 5 pathophysiological features to obtain the total injury score. (C-D) Immunohistochemistry to detect the expression of iNOS in lung tissues.The scale bar in the upper panel = 250 μm while that in the lower panel = 100 μm (C). And iNOS was quantified by ImageJ (D). (n ≥ 6 per group, ns represented no significant difference, *p < 0.05, **p < 0.01, ***p < 0.001)