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. Author manuscript; available in PMC: 2012 Dec 1.
Published in final edited form as: Nanomedicine. 2011 Apr 8;7(6):1001–1008. doi: 10.1016/j.nano.2011.03.007

Figure 1.

Figure 1

PEGylated dendrimers conjugated with Gd-DTPA via lysine. (A) PEG2k-PAMAM(G5), (B) PEG5k-PAMAM(G4), (C) PEG2k-PAMAM(G4) and (D) Ac-PAMAM (G4). The chemical structure of the surface modification is shown in panel (E).