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. 2016 Jul 22;6:29988. doi: 10.1038/srep29988

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Nanoparticle characterization (a) Schematic of nanoparticle PEG conjugation using EDC/NHS chemistry. (b) TEM images of monodispersed nanoparticles (PEGylated). (c) Hydrodynamic diameter of non-PEGylated and PEGylated nanoparticles. (d) Zeta potential of non-PEGylated and PEGylated nanoparticles, *p < 0.05, t-test. Error bars represent standard error of mean with n = 3 per group.