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Interaction of AuNPs with cells of different spheroids. (A–C) adsorption of AuNPs on plasmalemma (HepG2 cells). (D–H) Penetration of AuNPs into HEK293 cells. (E) Adsorption of AuNPs on plasmalemma; (F) Macropinocytosis of AuNPs; (G,H) AuNPs in late endosomes. 1—cytoplasm; 2—late endosome; asterisks show external space and arrows show plasmalemma. Bars correspond to 100 nm.
