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ROS produced by Dye 847-ZnO particles as a percentage of positive control (2% H2O2 in DI water). ROS measured using DCFDA 8 h after exposure to irradiation (2 min NIR lamp. Data shown are mean +/− standard deviation. Data were analyzed using ANOVA and post hoc t-test; data with ‘*’ represent statistically significant difference with respect to measurements at the same concentration but different irradiation times, n = 4, p < 0.05.
