5315
The first was to abruptly terminate tumor necrosis factor-induced NF-kappaB binding to the enhancer sequences in U1 monocytic cells, using a short pulse of exogenous tumor necrosis factor .
 ( protein: NF-kappaB, None) , ( protein: exogenous tumor necrosis factor, 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: NF-kappaB, None) , ( protein: exogenous tumor necrosis factor, None) 