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(a–d) Scanning electron micrographs of isolate K3C. (a) Control cells with preserved morphology. (b) Cells subjected to CTX (32 μg mL−1). (c) Cells subjected to CAZ (32 μg mL−1). (d) Cells subjected to ATM (32 μg mL−1). Bars = 2 μm. CAZ: ceftazidime; CTX: cefotaxime; and ATM: aztreonam.
