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Polymer-coated nanoceria’s intracellular localization in lung carcinoma cells (A549). Upon internalization, both the positively charged [ANC(+), a-c] and negatively charged [PNC(−), d-f] nanoceria co-localized with the lysosome. In contrast, neutral nanoceria [DNC(0), g-i] localized mostly in the cytoplasm.
