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Maximum-likelihood nucleotide tree of 35 blaOXA-51-like genes. These 35 genes correspond to 34 blaOXA-51 variants identified in this study and the blaOXA-66 gene (the blaOXA-51 representative of clonal complex 2). MEGA 6 was used to build the phylogenetic tree. Bootstrap values are shown at the nodes. One thousand replicates were used to calculate the bootstrap values.
