Fig. 3

PEG-CeONPs decreased the concentration of ROS in hUCMSCs. A A schematic drawing of the hUCMSC carried PEG-CeONPs. B hUCMSC viability assessed by the CCK-8 assay after treatment with PEG-CeONPs (n = 3). C hUCMSC uptake Cy3-labeled PEG-CeONPs and fluorescence imaging (n = 3). D, E Representative fluorescence imaging of intracellular ROS evaluated by DCFH and DHE probes and mean fluorescence intensity (n = 3). NS means not significant versus NC or 0 mg/mL PEG-CeONPs, **p < 0.01 versus NC or 0 mg/mL PEG-CeONPs, ^#p < 0.05 versus H₂O₂