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. 2019 Aug 8;14:6357–6369. doi: 10.2147/IJN.S214727

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© 2019 Zeng et al.

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Nanoparticle characterization. (A) Morphology of the nanoparticles was observed under a transmission electron microscope. Bar =200 nm. (B) Nanoparticle size, zeta potential, polydispersity index (PDI), drug loading, and encapsulation efficiency (EE). Data are mean ± SD (n=3). (C) Drug release profile of IL-12-PNP in PBS or PBS with 10% (w/v) rat serum. Groups were compared with non-paired Student’s t-tests. *P<0.05. Data are mean ± SD (n=3).