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(a) On-tube RPA results of a 203 bp target gene using plasmid DNA of SARS-CoV-2. (b) On-chip RPA results of a 203 bp target gene from plasmid DNA of SARS-CoV-2. Lane M is the 100 bp DNA ladder. Lane 1 is a negative sample. Lanes 2 and 3 are the positive samples. All the experiments were repeated three times.
