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. Author manuscript; available in PMC: 2021 Nov 1.
Published in final edited form as: Adv Drug Deliv Rev. 2020 Jun 29;156:188–213. doi: 10.1016/j.addr.2020.06.020

Fig. 2.

Fig. 2.

(a) Mixed monolayer-protected gold nanoparticles can be loaded with dyes or small molecule drugs, like thioalkylated FITC or Doxorubicin (Dox). (b) Cellular uptake and FITC-SH release by thiol-mediated replacement reactions within the cell. Particle uptake is dictated by surface functionality. (Adapted from ref. 52).