Table 1.

Neutralization in single cycle assays (50% inhibitory concentrations (μg/ml))^a

	LAI (whole virus)		JR-FL (pseudovirus)
	wt	N386D	wt	N386D
2G12	1.93	>10	0.66	7.96
CD4-IgG2	0.78	0.28	0.17	0.11
b12	0.62	0.079	0.043	0.020
b6	>10	>10	>10	>10

^a The IC₅₀ values were derived from the experiment in fig. 6 as described in the materials and methods section.