To this end, the effect of furin inhibitor I (decanoyl-Arg-Val-Lys-Arg-chloromethylketone), which has been reported to specifically inhibit this cleavage in WNV and other flaviviruses as Dengue virus [21], [22], was assayed on the infection of WT and Res WNVs (Fig. 2C). This evidence concerns the gene FURIN and infection.