14221
Mitogen-mediated transcriptional activation of the CAT gene in this construct was inhibited in Nef -expressing cells but not in control cells.
 ( cell line: Nef -expressing cells, None) , ( DNA: CAT gene, None) , ( protein: Nef, 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:
 ( cell line: Nef -expressing cells, None) , ( DNA: CAT gene, None) , ( protein: Nef, None) 