178 



J. N. Davidson 



Table IV 



Concentrations and Activities of Phosphorus Compounds in Fractions 



Obtained from Rabbit Liver Homogenates by the Schmidt-Thann- 



hauser Procedure and by the Schneider Procedure with the Schmidt- 



Thannhauser Procedure Applied to the Schneider Residue 



times with ice cold 10 per cent TCA in a refrigerated centri- 

 fuge. They showed that even 20 extractions reduced neither 

 the amount nor the activity (Table V) of the "phosphopro- 

 tein" phosphorus, which would therefore appear to be a 



Table V 



The Extraction of a Homogenate of Rat Liver Tissue 3, 6 and 20 



Times with 10 per cent Trichloracetic Acid, followed by Application 



OF the Schmidt-Thannhauser Procedure 



10 fic. 32p per 100 g. body weight were injected two hours before killing. 



•1st to 10th extractions only. 



