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Characterization and biocompatibility of CeO2 NPs. (a) Digital photo, (b) XRD pattern, (c) TEM image and (d) size distribution histogram of CeO2 NPs. (e) Viability and (f) proliferation of hPDLSCs when treated with CeO2 NPs at different concentrations. (g) Light microscope images of hPDLSCs when culture with or without CeO2 NPs under normal (OS-) and osteogenic induction medium (OS+). (h, i) Cell cycle analysis of hPDLSCs treated with CeO2 NPs for 3 days.
