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. Author manuscript; available in PMC: 2018 Feb 1.
Published in final edited form as: Int J Antimicrob Agents. 2016 Dec 23;49(2):224–232. doi: 10.1016/j.ijantimicag.2016.10.025

Fig. 3.

Fig. 3

Scanning electron microscopy images of Klebsiella pneumoniae isolates in the absence of treatment (A–E, control) and in the presence of polymyxin B (PMB) alone at 0.5 mg/L (A–E, polymyxin B), meropenem alone at 20 mg/L (A–E, meropenem) and PMB in combination with meropenem (A–E, combination). Magnification at 50,000× with the scale bar set at 300 nm to image individual bacteria of (A) BRKP20 (PMB MIC <0.5 mg/L, meropenem MIC = 16 mg/L); (B) BRKP21 (PMB MIC = 0.5 mg/L, meropenem MIC = 16 mg/L); (C) BRKP27 (PMB MIC = 1 mg/L, meropenem MIC = 16 mg/L); (D) BRKP67 (PMB MIC = 8 mg/L, meropenem MIC = 64 mg/L); and (E) BRKP28 (PMB MIC >128 mg/ L, meropenem MIC = 256 mg/L).