1067
It was found, in particular, that the element TCEd , which binds the transcription factor NF-kB , is very active in all three B clones tested.
 ( protein: transcription factor, None) , ( DNA: TCEd, None) , ( cell line: B clones, None) , ( protein: NF-kB, 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: transcription factor, None) , ( DNA: TCEd, None) , ( cell line: B clones, None) , ( protein: NF-kB, None) 