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Measured and modeled weekly mean antibody titers. A–C, Real data (green), gamma-plateau model (red), and gamma-decay model (blue) for the spike protein (S [A]), receptor-binding domain (RBD [B]), and nucleoprotein (N [C]) antibodies. D, E, Modeled half-lives of antibody decay with the gamma-plateau (D) and gamma-decay (E) models for S (blue), N (red), and RBD (green) antibodies. Abbreviation: MSD, Meso Scale Discovery assay.
