14589
We find that a short enhancer element containing the NF-kappa B binding site from the interleukin-2 receptor alpha-chain gene ( IL-2R alpha ) is preferentially activated in T cells .
 ( protein: interleukin-2, None) , ( DNA: NF-kappa B binding site, None) , ( DNA: interleukin-2 receptor alpha-chain gene, None) , ( protein: IL-2R alpha, None) , ( cell type: T cells, 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: interleukin-2, None) , ( DNA: NF-kappa B binding site, None) , ( DNA: interleukin-2 receptor alpha-chain gene, None) , ( protein: IL-2R alpha, None) , ( cell type: T cells, None) 