FIG 5.

Cell-cell fusion activities of wild-type and chimeric HeV and NiV F and G glycoproteins. (A) Cell surface expression (CSE) and cell-cell syncytium fusion levels are shown. (B to D) Fusion indices (FIs) were calculated for all combinations of F or F chimeras with G or G chimeras. CSE, fusion levels, and FIs were determined as outlined in the legend to Fig. 2, and a one-way ANOVA was performed as described in the legend to Fig. 2 The data represent averages ± SEM from at least four independent experiments.