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Biofilm formation in nylon fibers when in contact in different concentrations of the essential oil (EO) of oregano (observation in magnificent glass, 10× ampliation). (A)—Negative control, (B)—positive control, (C)—well 2 (higher concentration of EO), (D)—well 3, (E)—well 5 and (F)—well 6 (lower concentration of EO).
