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Phylogenetic trees of the nucleotide sequences of the complete regions of NoV GII/4. Phylogenetic tree generated based on the complete sequence of the ORF1 (about 5.1 kb) (A), ORF2 (about 1.6 kb) (B), ORF3 (about 0.8 kb) (C), and near-full-length genome (7.5 kb) (D)
