972
Both positive and negative regulatory elements were identified in the proximal 5' flanking region of the IL-3 gene .
 ( DNA: proximal 5#$%# flanking region, None) , ( DNA: IL-3 gene, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( DNA: proximal 5#$%# flanking region, None) , ( DNA: IL-3 gene, None) 