Table 3.

Presence of histopathologic changes in BALB/c mice (n = 5) after aerosol exposure to a low dose of type A F. tularensis

	Evidence of infection	Lung	Liver	Spleen
Day 6	2	2	2	2
Day 9	0	0	0	0
Day 12	0	0	0	0
Day 15	0	0	0	0
Day 20	0	0	0	0

Data are given as the number of mice affected.