Figure 1
From: Isolation and characterization of a genotype 4 Hepatitis E virus strain from an infant in China
Phylogenetic analysis based on the complete ORF2 sequence of the isolate in this study and other 10 genotype 4 HEV isolates in China, using the neighbor-joining method and evaluated using the interior branch test method with Mega 4 software. Percent bootstrap support is indicated at each node. The scale bar represents nucleotide substitutions per base. GenBank accession no. and origin are indicated. A genotype 1 HEV strain was included as outgroup.