26o 



H. A. KREBS 



VOL. 4 (1950) 



Q02 values calculated for the period of incubation between 20 to 40 min were therefore 

 as a rule somewhat higher than those given in the Table. In the case of brain and kidney 

 the difference was no greater than 5%. In the case of the other three tissues it was of 

 the order of 10%. 



3. Qq^ in saline containing calcium and low in phosphate and bicarbonate {medium III) 



On each of the 9 species i or 2 experiments were carried out in which Q02 was 

 measured at the same time in media II and III. These experiments showed that in 

 general the Q02 values calculated from the early readings (20 to 40 min) tended to be 

 somewhat lower in medium III, but the progressive fall with time was less in this 

 medium, and the Q02 values calculated for the 15 to 60 min period were within 10% 

 the same in the case of kidney cortex, lung and spleen in all 9 species. On the other hand 

 Q02 for brain, and some species of liver, was considerably lower in medium III, and of 

 these 2 tissues further specimens were examined. The results are given in Tables VI 

 and VII. 



TABLE VI 



QO2 OF BRAIN CORTEX AND LIVER OF Q MAMMALIAN SPECIES 



(Slices suspended in medium III (low in bicarbonate; containing calcium) ; the data are the averages 



References p. 26y-26g. 



