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. 2021 Mar 11;12:637982. doi: 10.3389/fimmu.2021.637982

Figure 5.

Figure 5

Durability of antibody responses against the RBD. RBD-binding antibody levels were monitored by ELISA in duplicate (A–C). Antiviral activity was assessed by neutralization assays against live, infectious SARS-CoV-2 in triplicate (D–F). Time indicates weeks after the third immunization.