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Images of E. coli cells obtained by TEM. Disruptions in the bacterial cell wall are highlighted with a red arrow: (A) control untreated E. coli, (B) E. coli incubated with control polymer P, (C) E. coli incubated with PEP, and (D) E. coli incubated with P-PEP. PEP induced the rupture of the cellular membrane.
