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. 2021 Feb 4;12:604079. doi: 10.3389/fmicb.2021.604079

FIGURE 4.

FIGURE 4

Relative mRNA levels of a series of MDR-related genes were measured by real-time PCR. (A) Relative mRNA expression levels of the outer membrane proteins genes ompF, ompC, ompW, and ompD; (B) Relative mRNA expression levels of protease genes ppiA and htpX and protein folding factors genes spy and yccA; (C) Relative mRNA expression levels of the genes involved in respiration cyoA, nuoA, and sdhC; (D) Relative mRNA expression levels of the efflux pumps genes acrD, mdtA, and acrF; (E) Relative mRNA expression levels of the outer membrane proteins genes STM3031; The expression level of each mRNA in strain JS represents one-fold. Data were normalized to rpoD expression levels. Bars represent means ± standard deviations. *, P < 0.05; **, P < 0.01.