Fig. 2From: Unusual severe cases of type 1 porcine reproductive and respiratory syndrome virus (PRRSV) infection in conventionally reared pigs in South KoreaPhylogenetic analysis of type1 and type 2 PRRSV strains including Korean isolates based on the nucleotide sequences of the complete ORF5 genes. The branches indicate bootstrap values calculated from 1,000 bootstrapping replicates. ▲: PRRSV isolates identified in this study. △: the most similar strains with the isolates in this study. ●: the vaccine strain used in case 2Back to article page