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. 2021 Jun 24;28(9):1379–1388.e7. doi: 10.1016/j.chembiol.2021.05.019

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Potent neutralizing nanobodies display high monovalent and bivalent affinities for the SARS-CoV-2 receptor-binding domain

(A) Monovalent binding of nanobodies displayed on the surface of yeast to biotinylated SARS-CoV-2 receptor-binding domain.

(B) Bivalent binding of nanobodies (Fc-fusion proteins) and antibodies (IgGs) to biotinylated SARS-CoV-2 receptor-binding domain immobilized on magnetic beads. The results are averages from three independent experiments, and the error bars are standard deviations.