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Neighbor-joining phylogenetic tree based on seven (A) and five (B) housekeeping genes. The corresponding OXA-51-like enzymes that the isolates encode and their sequence types are shown beside each isolate number. The CC that isolates were assigned to by eBURST analysis is indicated. Branches are labeled with percent support. OXA-69*, the OXA-69 enzyme encoded by a blaOXA-69 gene containing 5 silent nucleotide substitutions.
