1405
When analyzed by DNase footprinting , region II was protected preferentially in monocytic cells .
 ( DNA: region II, None) , ( protein: DNase, None) , ( cell type: monocytic cells, 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: region II, None) , ( protein: DNase, None) , ( cell type: monocytic cells, None) 