Fig. 2.

Phylogenetic tree constructed by Bayesian analysis of the nucleotide sequences of ORF2. Posterior probabilities of the clades are indicated at the nodes. In this figure, bat astrovirus sequence is identified as BAstV; sheep astrovirus as SAstV; mink astrovirus as MAstV; feline astrovirus as FAstV; human astroviruses as HAstV; porcine astrovirus as PAstV; canine astroviruses as CaAstV; turkey astrovirus type I and II as TAstV1 and TAstV2, respectively. GenBank accession numbers are indicated.