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Maximum parsimony tree using 1,713 bases in the dataset computed with PAUP* and rooted using Dugway (bold) as outgroup. Plasmid type, genomic group (GG), adaA types and the subgroups of the Q154-deletion type are shown next to the tree. Branch lengths correspond to the number of mutations. Animal strains are written in italic. IP: integrated plasmid; WT: wildtype; D2.1: deletion 2.1; D1: deletion 1. The figure was drawn using APE [38].
