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Characterization of the dendrimer-based carriers. (a) 1H NMR spectrum of G4 PAMAM (P4, brown), PEGylated PAMAM (P4P, olive), PAMAM-PEG-EP1 (P4PE, green), PAMAM-PEG-Ang2 (P4PA, blue) and PAMAM-PEG-EP1-ANG2 (P4PEA, purple) in D2O. (b) Size distribution of the dendrimer-based carriers characterized by DLS. (c-e) Morphological characterization of (c) P4, (d) P4P and (E) P4PEA by TEM.
