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Biosensors constructed for the selective detection of SARS-CoV-2 using (A) CRISPR–Cas12 based RT-LAMP assay. Reproduced with permission (Broughton et al., 2020). Copyright 2020, Nature. (B) FET. Reproduced with permission (Seo et al., 2020). Copyright 2020, American Chemical Society. (C) Voltammetry. Reproduced with permission (Fabiani et al., 2021). Copyright 2021, Elsevier.
