HEART 



BRAIN 



KIDNEY 



LIVER 



Figure 3. — The cytochrome c, flavin-adenine dinucleotide, and diphospho- 

 pyridine nucleotide content of four rat tissues 

 Values for the cytochrome c content are recalculated from those given by Stotz 

 (24) by assuming a molecular weight of 13,000. Flavin-adenine dinucleotide 

 values are calculated from the data of Ochoa and Rossiter (22) and Warbrug 

 and Christian (25). Diphosphopyridine nucleotide values are calculated from 

 tlie data of Axelrod and Elvehjem ( 1 ) with the exception of that for heart 

 muscle, which is from a value given by von Euler et al. ( 12 ) . The values given 

 by von Euler et al. are much lower than those reported by otlier workers. 



24 



