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(A) Representative temporal absorbance response and (B) dose-response curves obtained for a range of SARS-CoV-2 N-protein concentrations from GOF sensor probes chemisorbed with anti-SARS-CoV-2-N-protein IgG1 with the help of the optical experimental setup due to binding of immunocomplex with AuNP labels varying sizes and
concentration conjugated with anti-SARS CoV-2 -N-protein IgG2 (n = 3). Inset: TEM images of citrate reduced AuNPs prepared in-house.
