Fig. 3From: Meta-transcriptomic analysis reveals a new subtype of genotype 3 avian hepatitis E virus in chicken flocks with high mortality in Guangdong, ChinaDifferences between non-synonymous and synonymous (dN-dS) rates plotted for avian HEV ORF1, ORF2 and ORF3. dN-dS < 0 indicates a negatively selected site. dN-dS > 0 indicates a positively selected siteBack to article page