Human IFN-α 2b Recombinant Protein is supplied as lyophilized material that is very stable at -20°C. It is recommended to reconstitute with sterile water at a concentration of 0.1 mg/mL which can be further diluted in aqueous solutions as needed. Addition of a carrier protein (0.1% HSA or BSA) is recommended for long-term storage.
|Purity||A greater than or equal to 95% purity was determined by SDS-PAGE.|
|Endotoxin||Endotoxin levels are less than or equal to 1 EU / 1 μg hIFN-α 2b.|
|Activity||The bioactivity of recombinant hIFN-α 2b was determined in a viral CPE assay using EMC virus on A549 cells. The ED50 of each lot is greater than or equal to 2.0 x 108 units/mg.|
Recombinant human IFN-α 2b was expressed in E. coli and is supplied in a lyophilized form.
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