TABLE 1.

Detection of SIVmac251-8/95 in IV- and IVAG-inoculated monkeys after inoculation

Animal	Virus isolation					RT-PCR					p27 antigen (ng/ml)			Serum SIV-specific IgG titera
	1b	2	4	6	8	1	2	4	6	8	1	2	4	4	6	8
IV
22673	+	+	+c	+	+	+	+	+c	−	−	0.39	0.06	—f	128,000c	128,000	128,000
22801	+	+	+	+	+	+	+	+	+	+	—	0.24	—	4,000	2,000	1,000
25299	+	+	+	+	+	+	+	+	+	+	1.14	0.09	—	64,000	1,024,000	2,048,000
25388	+	+	+	+	+	+	+	+	+	+	0.66	0.91	0.83	32,000	128,000	256,000
27606	+	+	+	+	+	+	+	+	+	+	0.15	0.20		64,000	64,000	64,000
IVAG
23224	−	+	+	+	+	−	+	−	+	+	—	—	—	8,000	32,000	128,000
24483	+	+	+	+	+	+	+	+	−	+	—	0.28	—	512,000	256,000	256,000
25562	+	+	+	+	+	+	+	+	+	+	—	1.48	—	128,000	512,000	1,024,000
21743	NDd	+	+	ND	+	+	+	+	ND	+	ND	0.76	—	16,000	ND	256,000
24762	ND	+	+	ND	+e	−	+	+	ND	+e	ND	—	—	64,000	ND	512,000e

^aReciprocal of inverse titer. 

^bWeek p.i. 

^cWeek 5 p.i. 

^dND, not done. 

^eWeek 7 p.i. (necropsy). 

^f—, p27 < 0.49 ng/ml (below assay cutoff).