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Antimicrobial action against model oral biofilm cluster as determined by loss of fluorescence after CAM staining. The y-axis is the fluorescence intensity integrated over a field of view and normalized to the initial value. Four panels present the results obtained with the following treatments: untreated control (A), 11.6% ethanol (B), 0.12% chlorhexidine (C), and Biotene (D). Each data point represents the mean, and error bars denote the standard deviations (n = 6).
