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Sensitivity of the PRRSV-2 RT-RPA assay. The amplification products of the PRRSV-2 RT-RPA were analyzed by LFD and agarose gel electrophoresis. A In the LFD, the sensitivity was 5.6 × 10-1 TCID50 per reaction. The top line on the LFD is the control line, and the bottom line is the test line. B In agarose gel electrophoresis, the sensitivity was 5.6 TCID50 per reaction. M DNA marker, NC negative control, LFD lateral flow dipstick
