10207
A 1-kb region of the gene that includes 5' flanking sequence was reported earlier to contain functional promoter activity and was specifically demethylated in expressing cells in contrast to null cells .
 ( cell type: expressing cells, None) , ( cell type: null cells, None) , ( DNA: 5#$%# flanking sequence, None) , ( DNA: 1-kb region, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( cell type: expressing cells, None) , ( cell type: null cells, None) , ( DNA: 5#$%# flanking sequence, None) , ( DNA: 1-kb region, None) 