4727
Taken together, these results suggest that the cooperation of different transcription factors is essential for IL-9 gene expression in T cells .
 ( DNA: IL-9 gene, None) , ( cell type: T cells, None) , ( protein: IL-9, 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:
 ( DNA: IL-9 gene, None) , ( cell type: T cells, None) , ( protein: IL-9, None) , ( protein: transcription factors, None) 