Table 2.

Summary of histopathological characteristics of infected lung tissues

Day of infectionStrainNo. of mice analyzedInflammatory ResponseaPatternb
7B52Diffuse
E52.6Focal
G52.6Focal and localized
28B81.69Diffuse
E94.33Focal
G82.88Focal and localized
  • a Inflammatory response was graded for each mouse on a scale of 1 to 5. A rating of 1 corresponded to no inflammation. A rating of 5 corresponded to intense inflammation. The inflammatory response score is the average for the mice analyzed.

  • b Pattern refers to a qualitative assessment of the extent and type of involvement in lung section. For representational pictures, see Fig. 2.