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The performance of the LFIA and PCR. a PCR verification of VPAHPND status of input materials. M: ladder; 1: VPAHPND strain XN89; 2: VPnon-AHPND strain XN8, 3–6: VPAHPND-free shrimp samples. b The performance of the LFIA. 1: Negative spiked sample; 2–6: positive spiked samples. c PCR results corresponding to the photos in b. Data represent three independent repeats
