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Maximum-likelihood tree analysis based on combined structural gene nucleotide sequences [VP2 (PPV1 and 3) and Cap (PPV2, PPV4, PPV5, PPV6, and PPV7)] constructed with the Tamura-Nei model, with a gamma distribution, invariant sites, and 1,000 bootstrap values, in the MEGA X program. Korean PPVs from this study and previous study are marked with blue filled circles and hollow circles, respectively
