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Fig. 2. (A) Allometric plot of the proton leak (at 170 mV and 37°C) in isolated
liver mitochondria from mammal species differing in body mass (data are from
table 1 in Porter et al.,
1996). (B) Allometric plot of the activity of the Na+
pump (at 37°C and expressed as K+ uptake rate) in liver and
kidney tissue slices from mammal species differing in body size. (Data from
Couture and Hulbert, 1995a.)
Values are means ± S.E.M. The
respective allometric equations are shown in each figure.