Table 3.

Histologic lesion score compared with percentage of neutrophils in the BAL and fecal PCR results

	Lung			Nasal cavity
Mouse	Peribronchiolar infiltrates	Perivascular infiltrates	Cellular exudates	Turbinate mucosal infiltrates	Luminal exudates	Foreign bodies	BAL neutrophils (%)	Fecal PCR
1	—	+	+	++	—	—	20	+
2	++	++	—	++	+	+	5	+
3	—	+	—	++	+	—	2	+
4	++	++	—	+	—	—	20	+
5	+	+	—	—	—	—	2	—
6	++++	+	—	++	++ to +++	+	5	+
7	+++	+	—	++ to +++	++ to +++	—	10	+
8	++	—	+++	++	++ to +++	+	20	+
9	—	+	—	++	++	—	5	+
10	+	+	—	++	—	—	2	—

Lesion scores: +, minimal, very mild, or rare; ++, mild; +++, moderate; and ++++, marked.