4609
This review summarizes data on specific regulation of promoters and enhancers by nuclear trans-acting factors in lymphocytes .
 ( DNA: enhancers, None) , ( protein: nuclear trans-acting factors, None) , ( DNA: promoters, None) , ( cell type: lymphocytes, 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: enhancers, None) , ( protein: nuclear trans-acting factors, None) , ( DNA: promoters, None) , ( cell type: lymphocytes, None) 