12174
During monocyte-to-macrophage differentiation , the cellular content of vacuolar H+-ATPase ( V-ATPase ) increases more than 4-fold.
 ( protein: vacuolar H+-ATPase, None) , ( protein: V-ATPase, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( protein: vacuolar H+-ATPase, None) , ( protein: V-ATPase, None) 