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Scheme of the lab‐on‐a‐chip genosensor for SARS‐CoV‐2 virus detection. 3D‐printed electrodes were fabricated using a 3D printing pen (3D‐PP) and a conductive graphene/polylactic acid (PLA) filament. The antisense ssDNA probe was adsorbed on the 3D‐PP surface. SARS‐CoV‐2 RNA is monitored by decreasing of adenine oxidation signal when SARS‐CoV‐2 RNA adducts antisense ssDNA probe from 3D‐PP surface.
