Fig. 5From: IFN-λ1 in CHO cells: its expression and biological activityComparison of NK cytotoxicity promotion between rhIFN-λ1 and rhIFN-α2b. NK cytotoxicity was determined via the dehydrogenase releasing method using the Cytotox 96 Non-Radioactive Cytotoxicity Assay Kit. The ratio of NK cells to K562 target cells was 100:1Back to article page