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Biocompatibility and cytotoxicity of nGO and nGO-PEG nanoparticles (NPs). (A): WST-1 assay after treatment of Colon26 cells with nGO and nGO-PEG with increasing concentrations for 24 h and 72 h. (B): WST-1 assay after treatment of HT29 cells with nGO and nGO-PEG with increasing concentrations for 24 h and 72 h. Three repetitions of the experiments are done an values are MEAN±STDV. Statistical analysis is represented as *, where * p < 0.05 is accepted as statistically significant.
