Table 2.

P values of the test for association between high-titer antibodies and virus neutralization^a

Peptide no. (domain/region)	P value for:
	Very sensitive laboratory strain								Low-sensitive primary subtype C strain
	SF162 (R5)				IIIB (X4)				DU172 (R5)				DU156 (R5)
	NTr-Mo	EUN-N	TR-Mo	HIV+N	NTr-M	EUN-N	TR-Mo	HIV+N	NTr-M	EUN-N	TR-Mo	HIV+N	NTr-M	EUN-N	TR-Mo	HIV+N
3 (HR1, QARILAV)	<0.001	0.001	NS	NS	<0.001	NS	NS	NS	0.008	NS	NS	NS	NS	NS	NS	NS
27 (IDE)	0.001	0.001			0.001	NS			0.001	0.001			NS	<0.001
20 (HR2, MPER, 2F5, 4E10)	0.037	0.044	0.01	0.01	0.004	NS	NS	NS	NS	NS	0.05	0.05	NS	NS	NS	NS
12-B (HR2, MPER, 2F5)	0.028	0.007			0.028	NS			NS	NS			NS	NS
12-C (HR2, MPER, 2F5)	0.001	0.001	0.001	0.02	0.001	NS	0.001	0.05	<0.001	<0.001	NS	NS	NS	NS	0.05	0.03

^aThe analysis includes five gp41 peptides that elicited antibodies (titer, >1:20). NS, not significant. NTr-Mo, HIV-1-infected, nontransmitting mothers; EUN-N, HIV-1-exposed, uninfected newborns; TR-Mo, HIV-1-infected, transmitting mothers; HIV+N, HIV-1-infected newborns.