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. Author manuscript; available in PMC: 2013 Nov 27.
Published in final edited form as: Macromolecules. 2012 Nov 13;45(22):8939–8952. doi: 10.1021/ma301568u

Figure 2.

Figure 2

Structures of some common chelating agents for Gd3+ that are commonly studied. Gd-DTPA and Gd-DOTA are two of the eight FDA-approved agents currently adapted for clinical use and represent the parent chelate structure utilized in these agents.