Table 1.

Number of fish with positive staining for infectious pancreatic necrosis virus antigens in different tissues following intubation.

Tissue	Time	Live Virus		Inactivated Virus
	(Hours p.i.)	Anal Intubation	Oral Intubation	Anal Intubation	Oral Intubation
Posterior intestine	1	0 *	0 **	1	1
	24	0	0	0	0
	72	0	0	1	1
Head kidney	1	3 *	0 **	2	3
	24	0	1	2	0
	72	0	3	3	0
Spleen	1	2 *	0 **	1	2
	24	0	0	3	1
	72	0	0	2	0

* n = 3; ** n = 2 otherwise n = 5.