Fig. 2
From: Molecular and evolutionary characterization of norovirus GII.17 in the northern region of Brazil
Phylogenetic tree based on Norovirus GII.17 polymerase nucleotide sequence constructed by maximum likelihood method with GTR + I + G4 nucleotide substitution model and 1000 bootstrap replicates. The samples detected in this study are marked by a red ball. The square brackets represent the clades of GII.17.