1578
B-cell proliferation and induction of early G1-regulating proteins by Epstein-Barr virus mutants conditional for EBNA2 .
 ( protein: G1-regulating proteins, None) , ( protein: EBNA2, None) , ( cell type: B-cell, 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: G1-regulating proteins, None) , ( protein: EBNA2, None) , ( cell type: B-cell, None) 