Lung histopathology of mPIV1-infected mice.

<p>A. Representative hematoxylin and eosin (H & E)-stained sections of lung tissues from control and JCM5805 group mice (6 mice per group). Lung tissues were prepared from mice 3 days after infection. Scale bars, 300 μm. B. Histological scoring of lung tissues from mPIV1-infected mice belong to control (open columns) and JCM5805 (dot columns) group. Sections were scored at four levels as follows: 0, no symptoms; 1, low pathogenicity; 2, medium pathogenicity; 3, high pathogenicity. The mean ± SD of the tissues in each group is shown. *<i>P</i><0.05, **<i>P</i><0.01 (Mann-Whitney U test). The data shown is representative of two independent experiments.