ENPEP and infection: Western blot analysis conducted with Vero cells infected with rVSV-EnvG4-G6IN (C5 SS) indicated that the quantities of EnvG in total cell lysates after a 24 hr infection to be roughly equivalent to that of G, or perhaps even greater when the relative amounts of G and both the gp160 and gp41 bands are considered (Fig. 2a).