555
An IL-2 promoter bearing a defective NF- chi B site was completely inactive in EBV-transformed B cells , while it still had activity in Jurkat T cells .
 ( cell line: Jurkat T cells, None) , ( DNA: IL-2 promoter, None) , ( protein: NF- chi B, None) , ( cell line: EBV-transformed B cells, None) , ( DNA: NF- chi B site, None) , ( DNA: chi B, None) , ( cell type: B cells, None) , ( protein: IL-2, 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: Jurkat T cells, None) , ( DNA: IL-2 promoter, None) , ( protein: NF- chi B, None) , ( cell line: EBV-transformed B cells, None) , ( DNA: NF- chi B site, None) , ( DNA: chi B, None) , ( cell type: B cells, None) , ( protein: IL-2, None) 