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Plots of bacterial bioluminescence activity measured by Luciferase Assay after 24 hours of biofilm growth. Relative light unit (RLU) is the result of the luciferase reaction and proportional to the expression of the luciferase gene and indicates metabolic activity in the biofilms adherent on the composite disks. The results represent the average of 5 disks, with the error bar indicating the standard deviation. Bars with the same letter indicate statistically similar values (p≥0.05).
