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Figure 1 | Virology Journal

Figure 1

From: Polymorphic genetic characterization of the ORF7 gene of porcine reproductive and respiratory syndrome virus (PRRSV) in China

Figure 1

Phylogenetic relationship between 98 Chinese isolates, the prototype North American strain VR-2332, and its attenuated RespPRRS MLV vaccine stain based on the amino acid sequences of the ORF7 gene. A neighbor-joining tree was constructed with bootstrap values calculated from 1,000 replicates. The five subgroups are marked with different colors and the strains isolated in this study are indicated by a filled triangle.

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Virology Journal

ISSN: 1743-422X