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Schematic comparing Adenovirus type 2 and DNA/PEI– Au-Cap-RGD-ASA polyplex. (a) Type 2 Adenovirus with penton-base proteins (reproduced from ref. 9). (b) DNA/PEI-Au-Cap-RGD-ASA polyplex with RGD nanoclusters. (c) Au-Cap-RGD-ASA nanoparticles are conjugated to preformed DNA/PEI polyplexes when exposed to UV light.
