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(a) In vitro viability results of HeLa cells treated using GNR-PEG-CDs without lasers irradiation (from 0 to 400 µg mL−1); (b) in vitro viability results of HeLa cells treated with GNR-PEG-CDs (from 0 to 100 µg mL−1); (c) CLSM images of GNR-PEG-CDs (100 µg mL−1) before and after NIR irradiation with Calcein-acetoxymethylester and propidium iodide (PI) co-staining. Scale bars: 100 μm.
