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ROS induced by nanoparticles in Beas-2B cells. The cells were incubated with 1 mg/L SiO2 nanoparticles for 24 hours and 40 uM DCFH-DA at 37℃ for 30 min and observed fluorescence microscope. H2O2 (100 uM) was used as positive control.
ROS: reactive oxygen species, DCFH-DA: 2,7-dichlorofluoroscein diacetate, SiO2: silicon dioxide.
