when comparing an experimental condition to the normal heart , a lower rate of 14co2 production may not necessarily indicate a lower rate of oxidation of free fatty acids , but a difference in the rate of turnover of endogenous sources of unlabeled fatty acid such that the specific activity of intracellular metabolites equilibrate with extracellular labeled substrate to a lesser extent than in the normal heart .
C0018799
condition
C0018787
heart