HMDM were stimulated with AdV-GFP (250 pp/cell) in the presence of h9C12 antibodies at indicated doses. Infection was measured after 24h by flow cytometry. Infection relative to AdV alone is shown graphed on the left (n = 4 mean ± s.e.m). Representative plots and a comparison of the different h9C12 mutants at 0.2 ug/ml are also shown in the graph on the right(n = 4,mean ± s.e.m.). 