6621
During studies of apoptosis induced by T cell-receptor engagement , we identified ALG-4F , a truncated transcript that prevents T cell-receptor-induced FasL upregulation and cell death .
 ( protein: truncated transcript, None) , ( protein: ALG-4F, None) , ( protein: FasL, 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: truncated transcript, None) , ( protein: ALG-4F, None) , ( protein: FasL, None) 