LYSOSOMES, A NKW GROUP OF CYTOPLASMIC PAKTlCLhS 



137 



URICASE 



/^ 



I 



■ ' 



ACID PHOSPHATASE 



..-^x. 



CATHEPSIN 



./ 



.-'-v. 



/3- GLUCURONIDASE 



...'— V 



.•-•' 



ACID RIBONUCLEASE 



./• 'n. 



.^« 



ACID DEOXYRIBONUCLEASE 



.--• 



1.21 1.23 1.25 1.27 



1.21 1.23 1.25 1.27 



Fig. 6. Density-equilibration in .sucrose-D20 gradient. Experiment similar to that of figure 5, 

 but with a different gradient. Note third uricase peak. The low degree of resolution, as com- 

 pared with figure 5, is due to an unexplained complicating factor. Ordinate: relative concentra- 

 tion; abscissa: density. 



