Lung tissue of mice. Photomicrograph of the mice lung tissue. C1, C2, and C3 lung tissue of animal control; CV1, CV2, and CV3 lung tissue of animal supplemented with vitamin D; D1, D2, and D3 lung tissue of diabetic animal; DV1, DV2, and DV3 lung tissue of diabetic animal supplemented with vitamin D. Lung alveolus (A); bronchus (B); bronchiole (Br). (Bars, C1, CV1, D1, and DV1 = 100 μm; C2, CV2, D2, and DV2 = 50 μm; C3, CV3, D3, and DV3 = 10 μm). Staining: H/E.