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a) Schematic representation of intracellular delivery of functional protein using gold nanoparticles. b) Structure of the HKRK nanoparticle. (c-e) X-gal staining after transfection. (c) HeLa with protein only. Transfected (d) HeLa and (e) C2C12 cells with NP_Pep/β-gal (100 nM/50 nM). (f) The percent of transfection with NP_Pep/β-gal (100 nM/50 nM) in different cell lines. (g) Dose-dependent protein delivery into HeLa cells at 2:1 NP_Pep/β-gal.
