Fig. 4From: Influence of PhoPQ and PmrAB two component system alternations on colistin resistance from non-mcr colistin resistant clinical E. Coli strainsThe mRNA expression levels of pmrB/pmrK in TSAREC03 mutants. Values on the y axis are relative expression levels (fold change) normalized against levels in the colistin susceptible strain MG1655. * Significant differences compared to those in TSAREC03 (Student’s t-test, P < 0.05). N.D., non-detectable or expressionBack to article page