Polyethylene Glycol-Coated Gold Nanoparticles as DNA and Atorvastatin Delivery Systems and Cytotoxicity Evaluation

Figure 4

Transmission electron micrographs of AuNPs. (a) 20 nm gold nanoparticles, (b) 40 nm gold nanoparticles, and (c) gold nanoparticles coated with PEG contrasted by phosphotungstic acid.

(a)

(b)

(c)