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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
A significant distribution of LC3 puncta (green) was observed in the cytoplasm of CT26 cells. Confocal microscopy image obtained after cells were treated with IONPs–QDs (red) for 24 h; nuclei were stained using DAPI (blue). Scale bar = 10 μm.