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Immunogold detection of structural and nonstructural proteins in UHCVcon-57.3 cells expressing the entire HCV polyprotein. The cells were labeled with Abs against proteins NS3 (a), NS4B (b), NS5A (c), core (d), NS4A (e), and E1 (f). All proteins tested are found on the membranous web (a to f); the core protein is additionally found on lipid droplets (arrowhead) (d). Bars, 0.2 μm.
