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CLSM images of Caco-2 cells after 2 h of incubation of (a) coumarin-6 solution (control), (b) SNEDDS, (c) SNEDDS:BMIMBF4, (d) SNEDDS:BMIMPF6 and (e) SNEDDS:HMIMCl with the fluorescent coumarin-6 (green). DAPI is a blue-fluorescent DNA agent that allows the staining and visualization of nuclei. Total Scale bar: 10 μM. White arrows indicate the distribution of coumarin-6 in the cytoplasm and the intercellular spaces.
