5158
DNase I footprinting indicated that nuclear factors from activated T lymphocytes bound a promoter-proximal site , META(P) , and a promoter-distal site , META(D+) , within the 400-base pair META region .
 ( DNA: promoter-proximal site, None) , ( protein: nuclear factors, None) , ( DNA: promoter-distal site, None) , ( cell type: activated T lymphocytes, None) , ( DNA: META(D+), None) , ( DNA: 400-base pair META region, None) , ( protein: DNase I, None) , ( DNA: META(P), 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:
 ( DNA: promoter-proximal site, None) , ( protein: nuclear factors, None) , ( DNA: promoter-distal site, None) , ( cell type: activated T lymphocytes, None) , ( DNA: META(D+), None) , ( DNA: 400-base pair META region, None) , ( protein: DNase I, None) , ( DNA: META(P), None) 