9381
During T cell differentiation , expression peaked in the actively dividing immature single positive cells .
 ( cell type: actively dividing immature single positive 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: actively dividing immature single positive cells, None) 