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| ==ROX and non-mitochondrial respiration==
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| '''[[Residual oxygen consumption]]''' (ROX) is sometimes referred to as 'non-mitochondrial respiration'. This may be correct to a large extent, but is not entirely accurate. In a preparation of purified isolated mitochondria, a small but significant ROX is observed, even after correction for [[instrumental background oxygen flux]]. In this case, ROX is 'mitochondrial non-ETS' rather than ‘non-mitochondrial’ respiration. In permeabilized and intact cells, ROX may be higher than in isolated mitochondria, and this increased part then would actually be the non-mitochondrial component of ROX.
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