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Chemical structure of chitosan (A), the novel peptide-grafted derivative of chitosan (B) and the schematic representation for the chemical attachment of CPP sequence to the amine groups of chitosan resulting in a novel peptide-grafted derivative of chitosan.
Abbreviations: CPP, cell-penetrating peptide; EDC, N-ethyl-N′-(3-dimethylam-inopropyl) carbodiimide.
