6419
The generation of cell-mediated immunity against many infectious pathogens involves the production of interleukin-12 ( IL-12 ), a key signal of the innate immune system .
 ( protein: IL-12, None) , ( protein: interleukin-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-12, None) , ( protein: interleukin-12, None) 