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Phylogenetic analysis of goose astrovirus. The phylogenetic trees based on whole genome sequences (A) and amino acid sequences of ORF1a (B), ORF1b (C), and ORF2 (D) were constructed using the neighbor-joining method with 1,000 bootstrap replicates and the maximum composite likelihood model. The GAstV TZ03 isolate determined in this work is marked with a black triangle.
