[Construction of the full-length cDNA clone of Chinese virulent strain--F114].


Seven subclones covered the complete genome of classical swine fever virus Chinese virulent strain F114 were obtained by reverse transcription PCR. The complete nucleotide sequence of the genome of strain F114 was determined by sequencing. The cDNA fragments were then assembled and inserted downstream of a T7 promoter in pBluescript II sk+ plasmid vector to obtain the full-length cD-NA clone sk-12297. Homology comparison of the nucleotide and amino acid sequence of strain F114 with the known sequences of HCLV, Brescia and Alfort showed 95.70%, 96.80%, 86.03% identity in nucleotide and 97.41%, 98.54%, 93.33% identity in amino acid respectively.


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