生物活性: Tuvirumab (OST 577; SDZ-OST 577) is a human IgG1 subclass monoclonal antibody directed against HBV surface antigen (HBsAg). Tuvirumab binds specifically and with high affinity (K=3.6 nM) to HBsAg. Tuvirumab has the potential for chronic hepatitis B research.