13330
Our data indicate an important role for NF-AT in the faithful expression of high affinity IL-2 receptors and a close link between the TCR -mediated induction of IL-2 and IL-2 receptor alpha chain promoters , both of which are regulated by NF-AT factors .
 ( protein: IL-2, None) , ( protein: NF-AT factors, None) , ( protein: TCR, None) , ( protein: IL-2, None) , ( protein: IL-2 receptor alpha chain, None) , ( protein: IL-2, None) , ( protein: high affinity IL-2 receptors, None) , ( protein: NF-AT, None) , ( DNA: IL-2 receptor alpha chain promoters, None) , ( protein: NF-AT, 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-2, None) , ( protein: NF-AT factors, None) , ( protein: TCR, None) , ( protein: IL-2, None) , ( protein: IL-2 receptor alpha chain, None) , ( protein: IL-2, None) , ( protein: high affinity IL-2 receptors, None) , ( protein: NF-AT, None) , ( DNA: IL-2 receptor alpha chain promoters, None) , ( protein: NF-AT, None) 