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Fluorescent micrographs of dual acridine orange/ethidium bromide-stained cells showing induced morphological changes in (a) HEK293, (b) Caco-2 cells treated with 5-FU loaded 2% PEG-CHIT-MSN, (c) MCF-7 cell treated with 5-FU loaded 2% PEG-CHIT-MSN, and (d) HeLa cell treated with 5% PEG-CHIT-MSN (20× magnification).
