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Development and Application of Duplex PCR for Canine Distemper Virus and Canine Coronavirus Detection

SUN Yuan-yuan, ZHAO Peng, LIU Jun, WANG Yun, QIAN Ke   

  1. (Zhenjiang Entry-exit Inspection and Quarantine Bureau, Zhenjiang 212008, China)
  • Received:2013-07-29 Online:2014-03-20 Published:2014-05-15

Abstract: Two pairs of PCR primers were designed according to sequence of canine distemper virus (CDV) and canine coronavirus (CCV) from GenBank, respectively, which could amplify 550 bp fragment for CDV and 225 bp fragment for CCV. The products of PCR were cloned to pMD18-T for sequencing, which proved to be specific. Positive plasma were developed for standard DNA, and the sensitivity result of duplex PCR showed that the method could amplify 0.1 ng/μL nucleic acid for both of viruses. The result of rudimentary application showed that the method was specific, sensitive, efficient, and was a new detecting method for the mixed infection of CDV and CCV.

Key words: canine distemper virus; canine coronavirus; duplex PCR