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US09051584B2 Heat-resistant newcastle disease virus live vaccine vector system and use thereof 有权
耐热新城疫病毒活疫苗载体系统及其应用

Heat-resistant newcastle disease virus live vaccine vector system and use thereof
Abstract:
A heat-resistant NDV live vaccine vector system includes a transcription plasmid, three helper plasmids, and host cells. The transcription plasmid is constructed by through cloning complete genomic cDNA of a heat-resistant NDV vaccine strain to a pBR322 vector. The three helper plasmids are constructed by cloning sequences coding nucleoprotein (NP), phosphoprotein, large polymerase protein of a heat-resistant NDV vaccine strain respectively to pcDNA3.1 vectors. A recombinant NDV artificially obtained by cotransfacting host cells with the transcription plasmid and the three helper plasmids shows heat-resistance.
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