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Fluorescence images after the A549 cells were exposed to FITC-labeled LNE for 1, 6, and 12 hours, respectively.
Notes: The lipid concentration of LNE was 50 μg · mL−1. Co-cultured with PEG-modified LNE (A); and nonmodified LNE (B).
Abbreviations: FITC, fluorescein isothiocyanate; LNE, lipid nanoemulsion; PEG, polyethylene glycol.
