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Distribution of solid lipid nanoparticles (SLN) and PEGylated solid lipid nanoparticles (pSLN) in small intestinal villi viewed at different magnifications. Blue fluorescence indicates the nuclei of small intestinal cells and green fluorescence indicates nanoparticles. Adapted from Yuan et al.209 Reprinted with permission from reference 209. Copyright 2013 American Chemical Society.
