TABLE 1.

1086.C gp140 binding to CD4i epitope-specific MAb 17B in the absence or presence of various C1-specific antibodies and control antibodies^a

Antibody	17B binding response (RU)	% upregulation
None	357 ± 37	0.0
Synagis	363 ± 38	1.8
A32	636 ± 40	78.3
CH29	386 ± 24	8.1
CH38	756 ± 44	111.9
CH40	361 ± 39	1.2
CH51	408 ± 44	14.4
CH52	430 ± 48	20.5
CH54	474 ± 51	32.9
CH77	358 ± 24	0.3
CH78	292 ± 37	−17.9
CH81	433 ± 47	21.5
CH89	477 ± 53	33.7
CH90	358 ± 38	0.5
CH91	633 ± 65	77.5
CH92	362 ± 38	1.6
CH94	382 ± 26	7.2
CH29 IgA2	369 ± 22	3.6
CH38 IgA2	673 ± 41	88.7

^aThe 17B binding experiment was performed, and the percent upregulation was calculated as described in Materials and Methods. An average of three measurements of 17B binding and the estimated standard deviations are shown.