11419
We therefore investigated whether NF-kappaB /Rel proteins are expressed in human neutrophils , as well as their fate on cell activation.
 ( protein: NF-kappaB /Rel proteins, None) , ( cell type: neutrophils, None) , ( cell type: human neutrophils, None) , ( protein: NF-kappaB, 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 /Rel proteins, None) , ( cell type: neutrophils, None) , ( cell type: human neutrophils, None) , ( protein: NF-kappaB, None) 