Figure 2From: Label-free in vitro toxicity and uptake assessment of citrate stabilised gold nanoparticles in three cell lines Characterisation of the gold nanoparticles in milli-Q water and in culture medium using Transmission Electron Microscopy. TEM images of 14 nm AuNPs in (A) water, (B) RPMI culture medium, and (C) Ham’s F12 culture medium; and 20 nm AuNPs in (D) water, (E) RPMI culture medium, and (F) Ham’s F-12 culture medium.Back to article page