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Fig. 3 | BMC Veterinary Research

Fig. 3

From: Genetic analysis of porcine productive and respiratory syndrome virus between 2013 and 2014 in Southern parts of China: identification of several novel strains with amino acid deletions or insertions in nsp2

Fig. 3

Phylogenetic tree based on a comparison of 95 complete PRRSV ORF5 sequences, including the 56 sequences from this study and 39 ORF5 sequences from PRRSV strains originating from China and other countries. The tree was constructed using the neighbor-joining algorithm based on the p-distance model. The numbers indicate percentage bootstrap values calculated from 1000 bootstrap replicates. The PRRSV ORF5 sequences collected in this study are marked with a black square. The ORF5 sequences from prototype viruses of PRRSV are marked with a black square

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