1635
Moreover, the use of the DNase I as an in vivo footprinting agent reveals that the patients ' cell lines do not display a completely " bare promoter " as previously reported using dimethyl sulfate as the footprinting agent .
 ( DNA: bare promoter, None) , ( cell line: patients #$%# cell lines, None) , ( protein: DNase I, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( DNA: bare promoter, None) , ( cell line: patients #$%# cell lines, None) , ( protein: DNase I, None) 