Table 1.

Presence of histopathologic changes in BALB/c mice (n = 4, except day 22 [n = 1])) after aerosol exposure to a high dose of type A F. tularensis

	Evidence of infection	Bone marrow					Lymph nodes
			Lung	Spleen	Liver	Mediastinum	Mediastinal	Sublingual	Mesenteric
Day 0	0	0	0	0	0	0	0	0	0
Day 1	0	0	0	0	0	0	0	0	0
Day 2	0	0	0	0	0	0	0	0	0
Day 3	2	0	0	2	2	0	0	0	0
Day 5	4	2	1	4	4	4	1	0a	0
Day 6	4	3	3	4	4	0	0	1	0b
Day 22	0	0	0	0	0	0	0	0	0

Data are given as the number of mice affected.

^an = 3

^bn = 1