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Insulin release profile of nanoparticles fabricated from native chitosan (Cs) and the new peptide-grafted derivative of Cs (CPP-g-Cs) at three different pH values.
Note: ●: Nanoparticles from Cs, ▲: nanoparticles from CPP-g-Cs.
Abbreviations: CPP, cell-penetrating peptide; Cs, chitosan.
