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Uptake of gold nanoparticles (GNPs). Hyperspectral image of cell uptake of (a) 20-nm- and (c) 50-nm-sized GNPs; (b,d) GNPs clusters mapped using reflectance spectra of GNPs; (e) GNP internalization per cell for 20- and 50-nm-sized GNPs in two different cell lines. (f,g) The reflectance spectra of the 20- and 50-nm-sized GNPs in the monolayers (a,c). Reprinted with permission from [55]. Copyright 2016 Springer Nature.
