FIG 1.

Cluster of metabolic profiles of biocide mutants and respective wild-type strains of E. coli (A) and K. pneumoniae (B). Clusters of mutants according to their ability to metabolize carbon and nitrogen substrates by the unweighted-pair group method using average linkages (UPGMA) are shown. In the number of carbon (C) sources column, (+) indicates carbon substrates that were used more efficiently by mutants than by parental strains, and (−) indicates carbon substrates that were used less efficiently by mutants than by parental strains. cephal., cephalosporins; suscept., susceptible; inhib., inhibitors.