Pathogenic Characteristics of an Infection with Canine Influenza Virus and Streptococcus equi subsp. zooepidemicus Alone or in Combination in Mice

Figure 4

Gross pathology and histopathology of the lung tissues in mice. (a) Gross pathology of lung tissues. The scale bar is 1 cm. (b) Histopathological lesions of the lung. The scale bar is 100 μm. Arrows indicate lesion areas. (c) Pathological scores of lung tissues. Five random areas in each group of lung tissue sections were blindly examined for the extent and grade of lesions. A score <1 indicates mild pathological damage, 1–3, not including 3, indicates moderate damage, and 3 or higher indicates severe damage. , , and .

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