1538
Finally, a dominant-negative version of C/EBP beta blocked TNF alpha promoter activation in myeloid cells .
 ( protein: C/EBP beta, None) , ( protein: TNF alpha, None) , ( cell type: myeloid cells, None) , ( DNA: TNF alpha 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:
 ( protein: C/EBP beta, None) , ( protein: TNF alpha, None) , ( cell type: myeloid cells, None) , ( DNA: TNF alpha promoter, None) 