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Effect of azithromycin up to 5.0 mg/L on the red complex mono- and polymicrobial biofilms in a 96-well plate model. Azithromycin at concentrations 0–100 mg/L was incubated with bacterial cultures for 48 h under anaerobic conditions. Data points represent the mean AU620 value of a minimum of three biological replicates. Note the categorical scale.
