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Heart mitochondrial membrane potential. Changes in mitochondrial membrane potential (ΔΨm) evaluated in isolated heart mitochondria using safranine O as a probe, AUF = arbitrary unit of florescence, PMG = pyruvate, malate, and glutamate, S + R = succinate + rotenone. S3 = state 3, S4o = state 4 induced by oligomycin. FA = folic acid, NAC = N-acetyl-cysteine. Data are mean ± SEM, n = 5–6. * p < 0.05, ** p < 0.01.
