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. Author manuscript; available in PMC: 2016 Apr 15.
Published in final edited form as: Methods. 2015 Nov 10;99:99–111. doi: 10.1016/j.ymeth.2015.11.004

Fig. 1.

Fig. 1

Structure of the Gd3N cluster and C80 carbon cage, known as a Trimetasphere® (reproduced with permission from ECS Transactions, 13 (14) 117–124 (2008) Copyright 2008, The Electrochemical Society.).