11853
This cis element binds a protein complex referred to as HRF ( heme-responsive factor ), which is greatly enhanced both in heme-treated FLCs and during monocyte-to-macrophage differentiation .
 ( cell line: FLCs, None) , ( protein: heme-responsive factor, None) , ( DNA: cis element, None) , ( protein: HRF, 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 line: FLCs, None) , ( protein: heme-responsive factor, None) , ( DNA: cis element, None) , ( protein: HRF, None) 