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. Author manuscript; available in PMC: 2014 Aug 1.
Published in final edited form as: Free Radic Biol Med. 2012 Sep 20;53(11):2081–2091. doi: 10.1016/j.freeradbiomed.2012.09.011

Fig. 9.

Fig. 9

Measurement of the low O2•− flux by CT02-H (0.1 μM). The low O2•− flux was generated using a low concentration of XO (0.05 mU/ml), X (2 μM), and DTPA (100 μM) in PBS. The concentration of CT02-H was quantitated by comparing the double-integrated EPR signal of each radical with its predetermined concentration (i.e., 0.1 μM).