12340
IFN regulatory factor 1 ( IRF-1 ) is a transcription factor activated by either CD40 or cytokines .
 ( protein: IRF-1, None) , ( protein: IFN regulatory factor 1, None) , ( protein: CD40, None) , ( protein: transcription factor, None) , ( protein: cytokines, 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: IRF-1, None) , ( protein: IFN regulatory factor 1, None) , ( protein: CD40, None) , ( protein: transcription factor, None) , ( protein: cytokines, None) 