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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 8. — Expression of caspase-3 in lung tissue at 48 h. Caspase-3 was mainly expressed in bronchial epithelial cells, alveolar epithelial cells and vascular and airway smooth muscle cells. The caspase-3 expression levels in the saline, low-, middle- and high-dose groups were higher compared with the normal 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. DAB, 3,3-diaminobenzidine.