9352
These studies indicate that A-myb plays a role during a narrow window of normal B cell differentiation .
 ( protein: A-myb, None) , ( cell type: normal 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: A-myb, None) , ( cell type: normal B cell, None) 