13576
The TT -selected T cell line could be rendered unresponsive to its dominant epitope in a dose-dependent manner (IC50 = 0.03 microg/ml).
 ( cell line: TT -selected T cell line, 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: TT -selected T cell line, None) 