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Microscopic image obtained from bacterial cultures of Escherichia coli MG1655 wild type strain (A) and its derivative strains, obtained by selection with carvacrol (B); citral (C); and (+)-limonene oxide (D). Cultures were obtained after 24 h of incubation at 37°C in tryptic soy broth with yeast extract added. Arrows indicate examples of the morphology of filamentous cells.
