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Antibiotic susceptibility of two lysozyme-sensitive PAO1 mutants. PAO1, ΔbamB, and ΔfabY mutants were treated in LB for 16 h with 100 μg/mL Vancomycin (A), 0.5 μg/mL Ceftazidime (B), 25 μg/mL ampicillin (C), 0.2 μg/mL tobramycin (D), or 0.1 μg/mL ciprofloxacin (E). After a16-h incubation, aliquots from each culture were diluted and plated for CFU enumeration. *P < 0.05 vs. CFU of untreated cultures. Antibiotic concentrations that do not affect PAO1 growth were chosen for analysis.
