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Fig. 2. Full kinetic response of the proton leak rate to changes in membrane
potential of liver and skeletal muscle mitochondria of fed WA cane toads.
Liver mitochondria have a lower basal proton leak than skeletal muscle
mitochondria. A rough extrapolation of the skeletal muscle and the liver curve
would suggest that the lower liver proton leak is achieved by a decrease in
the respiratory chain activity and not via a change in the proton
leak kinetic function. Values are means ± s.e.m., N=9.