Figure 4
Histological analysis. Group E samples were examined by H&E staining at 21 DPI. (a) Alveolar septal thickening in macrophages indicated by a thick arrow. Hypertrophy of type II pneumocytes is indicated by a thin arrow. (b) Splenic corpuscles were diminished and the number of lymphocytes were decreased. (c) Swelling or destabilization in the structure of hepatocytes. (d) Kidney tubules were damaged. (e) The spaces between myocardial fibers were widened. (f) Gastric glands cells were swollen. (g) Necrosis and shedding of epithelial cells of the small intestine mucosa. (h) The number of lymphocytes were decreased (thin arrow) in mesenteric lymph nodes, with depletion of germinal centers (thick arrow).