Biodistribution and excretion of colloidal gold nanoparticles after intravenous injection: Effects of particle size.

Background: Inorganic gold nanoparticles (NPs) have a huge potential in targeted drug delivery. Simple preparation and surface modification procedure with their special physicochemical properties of gold NPs attract their use such as tumor targeting and the detection of cancerous cell.

Objective: Various studies were reported, however, details of biodistribution profile of gold NPs were not enough evaluated.