7643
To gain a better understanding of the transcriptional events that regulate this expression, we took advantage of our previously described mutant Jurkat cells .
 ( cell line: mutant Jurkat cells, 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: mutant Jurkat cells, None) 