22 OLOV LINDBERG et al. 



TABLE VII 



Effect of l-Thyroxine and Desaminothyroxine on Respiration and Phos- 

 phorylation OF Rat Liver Mitochondria in Absence and Presence of added 



DPN. 

 Each Warburg-flask contained: lo mM L-glutamate, 25 mM potassium phos- 

 phate, pH 75, I mM ATP, 4 mM MgCl.j, 125 mM sucrose, 30 mM glucose, an 

 excess of yeast hexokinase, and, when indicated, 0-05 mM DPN, in a final volume 

 of 2 ml. Gas phase, air. Centre well: 02 ml 2 M KOH. Temp., 30 . Time of 

 incubation, 20 min. 



(«) h-T/iyroxine 



