7450
The second stage, development, we propose is the true IL-12 induced developmental stage , involving expression of Stat4 inducible proteins .
 ( protein: Stat4 inducible proteins, None) , ( protein: Stat4, 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: Stat4 inducible proteins, None) , ( protein: Stat4, None) , ( protein: IL-12, None) 