6800
To begin to elucidate the mechanisms that regulate the transcription of cytokine genes , we wanted to determine which transcription factors are activated by PGN in mouse RAW264.7 and human THP-1 macrophage cells .
 ( DNA: cytokine genes, None) , ( cell line: mouse RAW264.7, None) , ( protein: transcription factors, None) , ( cell line: human THP-1 macrophage 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:
 ( DNA: cytokine genes, None) , ( cell line: mouse RAW264.7, None) , ( protein: transcription factors, None) , ( cell line: human THP-1 macrophage cells, None) 