1585
Growth arrest occurred at G1 and G2 stages of the cell cycle , indicating that functional EBNA2 is required at different restriction points of the cell cycle .
 ( protein: EBNA2, 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: EBNA2, None) 