292
Furthermore, we show that IL-12 stimulates formation of a DNA-binding complex that recognizes a DNA sequence previously shown to bind STAT proteins and that this complex contains STAT4 .
 ( protein: IL-12, None) , ( protein: STAT proteins, None) , ( protein: STAT4, None) , ( protein: DNA-binding complex, 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) , ( protein: STAT proteins, None) , ( protein: STAT4, None) , ( protein: DNA-binding complex, None) 