10876
Studies of the mechanisms that enable EBV to infect nonactivated, noncycling B cells provide compelling evidence for a sequence of events in which EBV binding to CD21 on purified resting human B cells rapidly activates the NF-kappaB transcription factor , which, in turn, binds to and mediates transcriptional activation of Wp, the initial viral latent gene promoter .
 ( protein: NF-kappaB, None) , ( protein: transcription factor, None) , ( DNA: viral latent gene promoter, None) , ( cell type: noncycling B cells, None) , ( protein: CD21, None) , ( cell type: resting human B cells, 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: transcription factor, None) , ( DNA: viral latent gene promoter, None) , ( cell type: noncycling B cells, None) , ( protein: CD21, None) , ( cell type: resting human B cells, None) 