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. 2015 Oct 5;2015:424751. doi: 10.1155/2015/424751

Figure 5.

Figure 5

Mitochondrial oxidative stress is augmented in the hearts of DCM animals. (a) Representative EPR spectra of heart tissue homogenates measured at 77 K. Semiquinone free radicals and Fe(III) from Fe-S centers signals are seen at g = 2.01 and g = 1.94, respectively. EPR signal amplitude was normalized against the weight of the heart and expressed as arbitrary units per gram. (b) Normalized EPR signal amplitude of the Fe-S centers (n = 3 hearts). (c) Normalized EPR signal amplitude of the semiquinone radical (n = 3 hearts, P < 0.026). Data are represented as mean ± SEM. Significant differences (P < 0.05) between mean values were determined using Student's t-test.