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Virus isolation and identification. (a) MDBK cells after viral infection. (b) Control cells. (c) BPIV-3 PCR amplification results. M: DL2000; 1–6: BPIV-3 virus detection results from different samples; 8: negative control; 7: positive control. (d) BPIV-3C PCR amplification results. M: DL2000; 1–6: BPIV-3C virus detection results from different samples; 7: negative control; 8: positive control.
