14906
Cell type- and stage-specific expression of the CD20/B1 antigen correlates with the activity of a diverged octamer DNA motif present in its promoter .
 ( DNA: octamer DNA motif, None) , ( DNA: promoter, None) , ( protein: CD20/B1 antigen, 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: octamer DNA motif, None) , ( DNA: promoter, None) , ( protein: CD20/B1 antigen, None) 