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. 2014 Jan 21;9(1):e85431. doi: 10.1371/journal.pone.0085431

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© 2014 Pires et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Light is the irradiated group at 70/cm². 30, 60 and 120 refers to incubation times in minutes. All PDT protocols showed statistical difference to the control group. Comparison between light and dye groups, alone, did not show statistical difference to the control group.