6132
A 768-bp upstream negative regulatory region has been identified that conferred lymphocyte-specific negative regulation in a heterologous system with a 244-bp deoxycytidine kinase core promoter .
 ( DNA: 768-bp upstream negative regulatory region, None) , ( DNA: 244-bp deoxycytidine kinase core promoter, 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: 768-bp upstream negative regulatory region, None) , ( DNA: 244-bp deoxycytidine kinase core promoter, None) 