MIC values of 16 non-metallo-β-lactamase-producing Pseudomonas aeruginosa isolates against piperacillin (a), ceftazidime (b), imipenem (c), meropenem (d), biapenem (e), and doripenem (f) in the presence (x axis) or absence (y axis) of ME1071. Plot sizes and numbers in the graph represent the number of strains.