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. Author manuscript; available in PMC: 2007 Mar 21.
Published in final edited form as: Free Radic Biol Med. 2006 Nov 10;42(3):404–412. doi: 10.1016/j.freeradbiomed.2006.11.007

Figure 4.

Figure 4

The kinetics of the reduction of 50 μM of the NR 3 by 1 mM ascorbate in the absence (●) and in the presence (○) of ascorbate oxidase, 0.03 U/ml, in 0.1 M Na-phosphate buffer, pH 7.6, 0.1 mM DTPA, measured by EPR spectroscopy as described in the Materials and Methods. Symbols (■) depict the EPR signal intensity of the NR 3 in the presence of 0.03 U/ml of ascorbate oxidase alone.