6250
These contained the luciferase gene under the control of either the human IL2 upstream enhancer region (segments -326 to +45) or three repeats of the NFAT element contained within it (segments -255 to -285).
 ( protein: luciferase, None) , ( DNA: NFAT element, None) , ( DNA: luciferase gene, None) , ( protein: IL2, None) , ( DNA: human IL2 upstream enhancer, 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: luciferase, None) , ( DNA: NFAT element, None) , ( DNA: luciferase gene, None) , ( protein: IL2, None) , ( DNA: human IL2 upstream enhancer, None) 