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Homogeneous Time Resolved Fluorescence Assay (hTRF) for detection of anti-viral antibodies. (A) Dynamic range and antigen specificity exhibited by Spike and Nucleocapsid control antibodies. (B) Detection of various Spike protein domains with control antibodies of varying isotypes in the hTRF assay. (C) Patient-derived antibodies exhibit specificity and high affinity for target proteins in the hTRF assay.
