12253
NK cell membrane extracts retained the capacity to activate EC and induced nuclear translocation of NF-kappaB ( p50 and p65 ).
 ( protein: NF-kappaB, None) , ( cell type: EC, None) , ( protein: p65, None) , ( protein: p50, 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) , ( cell type: EC, None) , ( protein: p65, None) , ( protein: p50, None) 