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UV-visible light absorption spectra of PDA-biomimetic membranes of the wild type (a) and Almr variants (b) of E. faecalis in the presence (solid lines) and absence (dotted lines) of alamethicin. The blue (640 nm)-to-red (500 nm) color transition in the presence of alamethicin was more pronounced in the biomimetic membranes of the resistant variants.
