Fig. 6.

Fragments of the lungs of male hACE2 mice obtained at autopsy on days 3–4 after intranasal injection of SARS-CoV-2 at a dose of 105–106 PFU: A—hyaline-like membranes; B—disorders of microcirculation such as congestion, stasis, blood sludge and microthromboses; C—tissue detritus in the lumen of pulmonary acini; D—transudate in the lumen of acini; E—sparse mononuclear cells in the wall and lumen of alveoli; f—sparse segmented neutrophils in the alveolar wall. Staining with hematoxylin and eosin. Magnification: 200x (A, B, C, E), 100x (D), and 400x (F)