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SPR sensorgrams representing the concentration-dependent kinetic analysis of the binding of immobilized heparin with SARS-CoV-2 related proteins. (A) RBD, (B) spike monomer, (C) spike trimer, (D) summary table of equilibrium dissociation constant (KD) and chi-square (Chi2) goodness-of-fit values. Data were analyzed using Biacore T100 evaluation software, and representative data are shown, which was repeated at least three times.
