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Effect of TBO-mediated PDI followed by chitosan treatment on biofilm of C. albicans. Biofilm cells were treated with 20 mM TBO for 1 h (A) or 2 h (B), followed by light exposure at 100 J/cm2. After PDI, biofilm cells were further treated with 0.5% chitosan for 90 and 120 min and then subjected to a plate count. Each point is the mean from three independent experiments ± SD.
