Figure 1

(a) AFM height scan of West Nile virus-infected Vero cells at 24 h p.i. Scan size is 251 nm × 251 nm. A progeny virus (arrow) budding from the plasma membrane of the host cell. (b) AFM height scan of West Nile virus-infected Vero cells at 24 h p.i. Scan size is 98.4 nm × 98.4 nm. Arrowhead shows the envelope surrounding the budding progeny virus. (c) TEM image of West Nile virus-infected Vero cells (arrowheads) budding from host cell. The electron dense dots are the immunogold particles targeted against the envelope protein of the WNV.