https://www.selleckchem.com/pr....oducts/pf-05221304.h
Low initial SARS-CoV-2 antibody titers dropping to undetectable levels within months after infection have raised concerns over long term immunity. Both the antibody levels and avidity of the antibody-antigen interaction should be examined to understand the quality of the antibody response. A testing-on-a-probe "plus" panel (TOP-Plus) was developed, which included a newly developed avidity assay built into the previously described SARS-CoV-2 TOP assays that measured total antibody (TAb), surrogate neutralizing antibody (SNAb), IgM an
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