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. 2018 Nov 29;8(4):697–704. doi: 10.15171/apb.2018.078

Figure 4.

Figure 4

Histopathological effects of irradiation of rat’s lungs and protective effect of metformin. A: Normal; B: Radiation; C: Radiation + Metformin. Irradiation caused a mild interstitial infiltration of lymphoplasma, and significant elevation of foam cells. Treatment with metformin before and after irradiation caused suppression of all changes in histological parameters (H&E staining).