15019
We studied the effect of interleukin-4 ( IL-4 ) on the lipopolysaccharide ( LPS ) induction of two immediate early genes c-fos and c-jun .
 ( protein: IL-4, None) , ( DNA: c-fos, None) , ( protein: interleukin-4, None) , ( DNA: c-jun, 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-4, None) , ( DNA: c-fos, None) , ( protein: interleukin-4, None) , ( DNA: c-jun, None) 