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![Sandwich ELISA: PD-L1 Antibody Pair [HRP] [NBP2-79437] - This standard curve is only for demonstration purposes. A standard curve should be generated for each assay.](http://images.novusbio.com/fullsize/PD-L1-Antibody-Pair-[HRP]-Sandwich-ELISA-NBP2-79437-img0002.jpg "Sandwich ELISA: PD-L1 Antibody Pair [HRP] [NBP2-79437] - This standard curve is only for demonstration purposes. A standard curve should be generated for each assay.")