S-33 Cutting-Edge Research on Hepatitis C Treatment and the Clinical Perspectives S33-1 Anti-viral therapy for chronic hepatitis C: current status and perspectives S33-2 HCV infection system and anti-viral development S33-3 Serine palmitoyltransferase inhibitor suppresses HCV replication in a mouse model S33-4 Viral safety of biologicals: Evaluation of HCV NAT assay and development of concentration method of HCV for sensitive detection by NAT S33-5 Search for HCV Invasion Inhibitory Principles from Medicinal Plants S33-6 Antiviral evaluation of natural products and their application to viral diseases