Fig. 2Â aFrom: Molecular characteristics of antibiotic-resistant Escherichia coli and Klebsiella pneumoniae strains isolated from hospitalized patients in Tehran, IranRelative expression levels of the pmrA, pmrB, pmrC, pmrE, pmrD, pmrK, phoP and phoQ genes in colistin-resistant K. pneumoniae isolates. No differences in expression levels were observed for pmrD and pmrE genes. ATCC: K. pneumoniae ATCC 700603. b Relative expression levels of the pmrA, pmrB, pmrC, pmrK, phoP and phoQ genes in PDR strain (K54). ATCC: K. pneumoniae ATCC 700603Back to article page