Nano particles of gold are non-cytotoxic even at 28-35 nanomet | Nano Noble Metals in Health

Nano particles of gold are non-cytotoxic even at 28-35 nanometers in size, and purity questionable.
Does not induce protein absorption. JUST IMAGINE how well a very very pure, gold nano particle of of between 0.14 and 4 nanometers, with a maximum energetic charge could benefit? https://pubmed.ncbi.nlm.nih.gov/21897638/