8096
Because these induced gene products have NF-kappaB sites in their promoter regions , we next examined whether there was an up-regulation of nuclear NF-kappaB levels .
 ( protein: NF-kappaB, None) , ( DNA: promoter regions, None) , ( protein: NF-kappaB, None) , ( DNA: NF-kappaB sites, 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) , ( DNA: promoter regions, None) , ( protein: NF-kappaB, None) , ( DNA: NF-kappaB sites, None) 