TABLE 1.

Reactivity of the sera from three SIVcpz-infected chimpanzees of Cameroon with distinct V3 and gp41 reference peptides^a

Peptide and virus or group	Serum reactivity
	Group M	Group O	Group N	Cam3	Cam4	Cam5
V3
Group Mb	1.54c	0.26	0.23	0.31	0.17	0.56
Group O	0.11	1.09	0.13	0.11	0.10	0.11
Group N	0.11	0.13	0.76	0.70	0.37	0.55
SIVcpz-gab	0.11	0.12	0.56	0.51	0.30	0.58
gp41
Group Mb	1.60	1.00	0.38	0.31	0.54	0.75
Group O	1.25	1.42	0.24	0.11	0.21	0.10
Group N	0.22	0.61	1.13	0.97	1.20	0.85
SIVcpz-gab	0.43	0.13	0.78	0.94	1.10	1.05

^aThe assays were based on the EIA technique as previously described (16). 

^bThe peptide is based on an HIV-1 subtype A sequence. 

^cBold type indicates strong reactivity with the peptide.