TABLE 1.

Lesion and IHC scores of PI-3 virus-infected and control neonatal lambs 3, 6, and 17 days p.i.^a

Day p.i.	Control		PI-3 inoculated
	Lesion scoreb	IHC scorec	Lesion score	IHC score
3	0	0	2.00 ± 0d	2.67 ± 0.33d,e
6	0	0	2.67 ± 0.33d	0.67 ± 0.33e
17	0	0	1.00 ± 0d	0

^aPI-3 virus-infected lambs had lesions and viral antigen that were not present in controls.

^bValues are means for lesion score ± SEM (three samples per group).

^cValues are means for PI-3 viral-antigen IHC score ± SEM (three samples per group).

^dSignificantly increased compared to controls.

^eSignificantly increased compared to day 17 p.i.