Table 2.

Effects of blocking viral infection via immune exclusion by MAbs added at apical surfaces^a

MAb (80 μg in 480 μl)	Specificity	Virus titer (PFU/well)	% Reduction of virusb
5H7-IgA	Anti-M	9,750.00 ± 866.03d	6.02
5H7-IgG	Anti-M	8,000.00 ± 450.69d	22.89
16CD11-IgA	Anti-H	560.00 ± 45.48c	94.60
16CD11-IgG	Anti-H	1,437.50 ± 76.04c	86.14
Irrelevant IgA	Anti-HIVgp41	9,860.00 ± 54.06d	4.96
Medium alone		10,375.00 ± 661.44	0.00

^aExperiments were repeated on at least three occasions with similar results. The results of a representative experiment are shown. The data are means ± SEM (n = 3).

^bCompared to no-antibody control.

^cMean virus titers were significantly lower (P ≤ 0.01) than those from cells exposed to no antibody.

^dMean virus titers were not significantly lower (P ≥ 0.05) than those from cells exposed to no antibody.