Figure 3From: Polymorphic genetic characterization of the ORF7 gene of porcine reproductive and respiratory syndrome virus (PRRSV) in China(a) The distribution of the amino acid mutations along the N protein of the 100 isolates analyzed in the study. (b) Differences between non-synonymous and synonymous substitutions (dN-dS) for ORF7 sequences of all the 100 isolates. (c) Hydrophilicity profiles of the N proteins of representative PRRSVs.Back to article page