4091
Here, using the murine B-cell lymphoma cell line A20 , we show that the TNF-alpha gene is regulated in a cell-type-specific manner.
 ( DNA: TNF-alpha gene, None) , ( cell line: murine B-cell lymphoma cell line, None) , ( cell line: A20, 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: TNF-alpha gene, None) , ( cell line: murine B-cell lymphoma cell line, None) , ( cell line: A20, None) 