Fig 3.

Inhibition of cell fusion. Fusion of MV H- and F-coexpressing cells with SLAM-bearing cells in the presence of the indicated compound concentrations was quantitated at 2 h (A), 4 h (B), and 6 h (C) with a β-Gal complementation assay. Results are presented as percent reductions in luminescence (y axis) compared to that in the absence of treatment, as a function of the compound concentration (x axis). Each point is the mean result of three experiments (± the standard error). MV HRC4 is significantly more efficient at inhibiting fusion than MV HRC2 is (P < 0.0001, F test).