14916
The BAT box and Oct-2 were also implicated in the induction of CD20 in the pre-B cell line , PB-697 , via phorbol esters .
 ( cell line: pre-B cell line, None) , ( DNA: BAT box, None) , ( protein: Oct-2, None) , ( protein: CD20, None) , ( cell line: PB-697, 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 line: pre-B cell line, None) , ( DNA: BAT box, None) , ( protein: Oct-2, None) , ( protein: CD20, None) , ( cell line: PB-697, None) 