Recombinant Protein;5MG;Recombinant Streptavidin (STN-N5116) is expressed from E.coli cells.; ;Immobilized Biotinylated Human CD19 (20-291), His,Avitag (Cat. No. CD9-H82E9) at 1 g/mL (100 L/well) on Streptavidin (Cat. No. STN-N5116) precoated (0.5 g/well) plate, can bind Monoclonal Anti-Human CD19 Antibody, Mouse IgG2a with a linear range of 0.1-6 ng/mL (QC tested);Immobilized Biotinylated SARS-CoV-2 S protein RBD, His,Avitag (Cat. No. SPD-C82E9) at 1 g/mL (100 L/well) on Streptavidin (Cat. No. STN-N5116) precoated (0.5 g/well) plate, can bind Monoclonal Anti-SARS-CoV-S protein RBD Antibody, Human IgG1 with a linear range of 0.1-4 ng/mL (Routinely tested).