3843
Treatment of the mature B-cell line BAL-17 with either anti-immunoglobulin M or phorbol 12-myristate 13-acetate leads to an increase in bcl-2 expression that is mediated by the CRE site .
 ( cell line: mature B-cell line BAL-17, None) , ( DNA: CRE site, None) , ( protein: bcl-2, 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: mature B-cell line BAL-17, None) , ( DNA: CRE site, None) , ( protein: bcl-2, None) 