Fig. 2From: Molecular and serological investigation of Hepatitis E virus in pigs slaughtered in Northwestern ItalyPhylogenetic tree based on the 5’ end of the ORF2 sequence of HEV and constructed using the Neighbour-Joining method and the Kimura-2 model. HEV isolates are indicated by black triangles and the HEV subtypes for genotype 3 are identified outside the brackets. Bootstrap analysis values (percentages) are shown. The bar at the base of the tree shows the scale for nucleotide substitution per siteBack to article page