The activity was determined by a viral resistance assay of Human WISH cells, and was found to be in the range of 1 x 108 IU/mg.
Storage Buffer:
Lyophilized from PBS, pH 7.0
Storage Instruction:
Store at -20°C on dry atmosphere for 2 years. After reconstitution with deionized water, store at 4°C for 1 month or store at -20°C for 6 months. Aliquot to avoid repeated freezing and thawing.