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The BHK (baby hamster kidney fibroblast) cell line is used as an expression system for viral vaccines and other therapeutic proteins. Cygnus HCP kit is generic in the sense that it is intended to react with essentially all of the HCPs that could contaminate the product, independent of purification process. The antibodies were generated against and affinity purified using a mild lysate of BHK cells. The resulting antibodies were then been characterized against three commercial cell lines used to produce various viral and protein products. This analysis indicated the vast majority of HCPs were conserved among multiple BHK cell lines and product purification processes. The assay qualification determined the LOD for this kit is ~0.4 ng/ml.
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