Production of cell culture‐derived infectious HCV (HCVcc) tagged with Gaussia luciferase from the Jc1FLAG2(p7-nsGluc2A) construct (genotype 2a, provided by Dr. Charles M. Rice) has been described elsewhere27 (link). HCV viral titer was expressed as focus forming units (FFU) and determined by immunofluorescence staining using primary anti-HCV NS5A mouse antibody (1:25,000; clone 9E10, gift from Dr. Charles M. Rice), followed by Alexa Fluor 488 goat anti-mouse immunoglobulin G (IgG) (H+L) (1:400; Invitrogen) as previously reported27 (link).
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