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. 2023 May 10;390:133960. doi: 10.1016/j.snb.2023.133960

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Fig. 5 — (A) Nyquist plots obtained after the treatment of various concentrations of Omicron BA.2 ranging from 0 RIU to 6000 RIU in the presence of [1:1] redox probe, at a pH 7.4 under buffer media. (B) A linear plot was obtained from R_ct [MΩ] versus Omicron BA.2 concentration for (A).