

kf 



5/ 



V • 



41 



■*'1^0^ 



W^~" 



'a. ^ 





% 



%^ 



f# 



«< '#,H- 



-%mMf 





'^ 



^'i 



Fig. 7-1 Yeast Cells Containing Stored Glycogen Stained 

 with Lugol's Solution. 



a. Densely aggregated compact masses of glycogen charac- 

 teristic of cells held in high concentrations of carbohydrate. 



b. and c. Loosely aggregated glycogen accumulated while 

 shaken in a Warburg apparatus containing 4 per cent of glucose 

 for 2 hours . 



d. and e. Two optical levels through a field showing an 

 unusual type of accumulation of glycogen characterized by the 

 deposition of numerous small compact deposits immediately in- 

 side the plasma membrane. 



7-4 



