13027
Although little is known to date about the regulation of gene transcription in neutrophils , several indications point to a role for distinct transcription factors , such as members of the NF-kappaB and STAT families .
 ( cell type: neutrophils, None) , ( protein: STAT families, None) , ( protein: NF-kappaB, None) , ( protein: transcription factors, 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:
 ( cell type: neutrophils, None) , ( protein: STAT families, None) , ( protein: NF-kappaB, None) , ( protein: transcription factors, None) 