2997
Within the region between -108 and -40 base pairs of the IFN-gamma promoter are two conserved and essential regulatory elements , which confer activation-specific expression in T cells .
 ( protein: IFN-gamma, None) , ( DNA: regulatory elements, None) , ( cell type: T 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:
 ( protein: IFN-gamma, None) , ( DNA: regulatory elements, None) , ( cell type: T cells, None) 