5001
This expression may in part reflect expression of A-myb by the normal germinal center B cells that are the normal counterpart of these transformed B cells .
 ( cell type: B cells, None) , ( DNA: A-myb, None) , ( cell line: transformed B cells, 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:
 ( cell type: B cells, None) , ( DNA: A-myb, None) , ( cell line: transformed B cells, None) 