6482
To better clarify the molecular basis of IL-12 action, we set out to characterize genes up-regulated by IL-12 , first by contrasting IL-12 -and IFN -alpha-inducible genes .
 ( protein: IL-12, None) , ( DNA: IFN -alpha-inducible genes, None) , ( protein: IL-12, None) , ( protein: IL-12, None) , ( protein: IFN, 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: IL-12, None) , ( DNA: IFN -alpha-inducible genes, None) , ( protein: IL-12, None) , ( protein: IL-12, None) , ( protein: IFN, None) 