Fig. 5: Histopathological changes in non-transgenic (Tg) and double-Tg mouse lungs after SARS-CoV-2 infection.

Representative images of the hematoxylin and eosin-stained lung sections at 0 (mock), 3, and 6 dpi. Results represent six mice per group. Images show low (left; bars, 100 μm) and high magnification (right; bars, 100 μm).