2343
Two other sites display disparate effects on IL-2 gene expression in different T leukemia cell lines : the distal purine box ( -291 to -277 ) and the proximal purine box sites ( -145 to -128 ).
 ( cell line: T leukemia cell lines, None) , ( DNA: proximal purine box sites, None) , ( protein: IL-2, None) , ( DNA: distal purine box, None) , ( DNA: -291 to -277, None) , ( DNA: IL-2 gene, None) , ( DNA: -145 to -128, 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:
 ( cell line: T leukemia cell lines, None) , ( DNA: proximal purine box sites, None) , ( protein: IL-2, None) , ( DNA: distal purine box, None) , ( DNA: -291 to -277, None) , ( DNA: IL-2 gene, None) , ( DNA: -145 to -128, None) 