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. 2020 May 13;11:798. doi: 10.3389/fmicb.2020.00798

FIGURE 4.

FIGURE 4

Results of biofilm formation. (A) Comparison of biofilm formation between CL-S and CL-IR strains. (B) Biofilm formation of CL-chrR and CL-mcrR strains was compared with that of E. coli reference strain MG1655. (C) Comparison of biofilm formation among CL-S, CL-IR, CL-chrR, and CL-mcrR strains. (D) Biofilm formation of TC-mcr strains was compared with that of their recipient strain, J53. The error bars indicate the standard deviations. Statistical analyses were conducted with unpaired, two-tailed t-test. **P ≤ 0.01; ***P ≤ 0.0001; ns, not significant.