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Phylogenetic analysis of PCV3 was conducted, wherein “▲” denotes the sequences of the strains obtained in this study. (A) Genetic evolution tree based on the complete coding sequences (ORF1 + ORF2)of PCV3 isolate variant strains and selected reference strains; (B) Genetic evolution tree based on the ORF2 genes of PCV3 isolate variant strains and selected reference strains.
