Fig 1.

Phylogenetic tree displaying the relationships among mammalian AstVs. The tree was calculated on the full-length amino acid capsid alignment without removing the gaps, using the neighbor-joining method with the p-distance correction, with 1,000-replicate bootstrapping using the MEGA package version 4.0 (15). Bootstrap values lower than 75% are not shown. The canine AstV strain ITA/2010/Zoid is indicated with a solid circle. AstV species with assigned designation are indicated with the letter G followed by the roman number and a capital letter. Strains with no assigned designation are indicated with a G. Abbreviations: ca, canine; fe, feline; hu, human; po, porcine; bo, bovine.