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. 2021 Aug 10;13(609):eabj0847. doi: 10.1126/scitranslmed.abj0847

Fig. 1. Multiple exposures increase antibody reactivity to SARS-CoV-2 variants.

Fig. 1.

(A to C) Ratio of reactivity signal to control (Signal:control) of lineage A S1 (A), B.1 S1 (B), and B.1.351 S1 (C) at a 1:600 serum dilution. The number of vaccine doses and infection history is indicated. Plots show median and interquartile ranges (IQRs). Differences between groups were analyzed using a Kruskal-Wallis test with Dunn’s multiple comparisons correction. **P < 0.01; ***P < 0.001; ****P < 0.0001; ns, nonsignificant.