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. Author manuscript; available in PMC: 2013 Jan 18.
Published in final edited form as: Adv Mater. 2011 Aug 15;23(36):H248–H253. doi: 10.1002/adma.201101877

Figure 2.

Figure 2

In vitro cell viability assays of composite Fe3O4:pSi nanoparticles and their components. Composite nanoparticles (Fe3O4:pSi mass ratio = 25%), nanoparticles encapsulated in 2 kDa poly(ethylene) glycol micelles, and empty poly(ethylene) glycol-coated Si nanoparticles are compared. Formulations were incubated with either HepG2 (A) or rat hepatocytes (B) for 24 h, and the percentage of viable cells was determined using a calcein AM/ethidium homodimer-1 live/dead assay. No appreciable cell death is observed for eitherthe composite or the constituent formulations.