MEDICAL & BIOLOGICAL LABORATORIES CO., LTD.;JAPAN AS REPRESENTED BY DIRECTOR-GENERAL OF NATIONAL INSTITUTE OF INFECTIOUS DISEASES;TORAY INDUSTRIES, INC.
The present invention provides an anti-hepatitis-C-virus-E2-protein antibody or antigen-binding antibody fragment having infection-inhibiting activity against the hepatitis C virus (HCV). The present invention also provides an anti-hepatitis-C-virus-E2-protein antibody or antigen-binding antibody fragment having a specific variable region, having infection-inhibiting activity against the hepatitis C virus (HCV), and presenting the ability to suppress the appearance of escape variants.