CLDN1 and infection: Moreover, infection of Huh7.5.1-8 cells with wild-type HCV-JFH1-based HCVpp was strongly inhibited by anti-CLDN1 mAb, whereas infection of Huh7.5.1-8 cells with HCV-JFH1-based HCVpp having M706L was not (Fig. 3b).