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. 2020 Aug 4;22(4):3405–3417. doi: 10.3892/mmr.2020.11413

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Copyright: © Yang et al.

This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Figure 4. — Expression of iNOS in lung tissue at 24 h. iNOS was mainly expressed in bronchial epithelial cells, alveolar epithelial cells and vascular and airway smooth muscle cells. Higher iNOS expression levels were detected in the saline, low-dose, middle-dose and high-dose groups compared with the control group. (A) Control group, (B) saline group, (C) low-dose group, (D) middle-dose group, (E) high-dose group and (F) PBS group. Scale bars, 100 µm; magnification, ×400; DAB staining. iNOS, inducible nitric oxide synthase; DAB, 3,3-diaminobenzidine.