Fig. 3From: Colistin resistance in Gram-negative bacteria analysed by five phenotypic assays and inference of the underlying genomic mechanismsCore genome MLST Neighbour Joining trees of E. coli and K. pneumoniae. MLST sequence types are shown. Scale bar indicates the number of variant alleles relative to the total number of targets for that species. * indicates isolates from the same patient. Red boxes around isolate names indicate colistin resistance. Mutations associated with colistin resistance are shown on the relevant branches. Acquired plasmid-mediated genes associated with resistance are also shown on the relevant branches in italicsBack to article page