50mM Tris pH-8 and 5mM EDTA.

HCV Core Genotype-1 protein was purified by proprietary chromatographic technique.

HCV Core Genotype-1 protein is >95% pure as determined by 10% PAGE (coomassie staining).

Immunoreactive with sera of HCV-infected individuals.

HCV Core Genotype-1 although stable at 4°C for 1 week, should be stored below -18°C. Please prevent freeze thaw cycles.