8848
Two of these motifs are part of a highly conserved and inducible dyad symmetry element shown previously to control a remote IL-2 enhancer and the CD18 promoter .
 ( DNA: dyad symmetry element, None) , ( DNA: IL-2 enhancer, None) , ( DNA: CD18 promoter, 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: dyad symmetry element, None) , ( DNA: IL-2 enhancer, None) , ( DNA: CD18 promoter, None) 