Fig. 8

Immunostaining of TNF-α and iNOS, rat lungs. a, b and c Groups A, B and C, respectively, showing very weak to nil immune reactive cells. d Group D showing strong expression of TNF-α and iNOS. e and f Groups E and F, respectively, showing moderate to weak positive immune reaction in few cells (TNF-α and iNOS scale bar 100 µm). g Immunostaining expression area % of TNF-α and iNOS (data were expressed as mean ± SE, different letters (a, b, c) indicating significant differences at p < 0.05. (H&E scale bar 100 µm)