8192
IL-12 and IL-2 can stimulate mitogen- or CD3- activated T cells to proliferate, produce IFN-gamma , and kill tumor cells .
 ( protein: IL-2, None) , ( cell type: tumor cells, None) , ( protein: IFN-gamma, None) , ( protein: IL-12, 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-2, None) , ( cell type: tumor cells, None) , ( protein: IFN-gamma, None) , ( protein: IL-12, None) 