13789
Activation of Stat-3 is involved in the induction of apoptosis after ligation of major histocompatibility complex class I molecules on human Jurkat T cells .
 ( protein: Stat-3, None) , ( cell line: Jurkat T cells, None) , ( cell line: human Jurkat T cells, None) , ( protein: major histocompatibility complex class I molecules, 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: Stat-3, None) , ( cell line: Jurkat T cells, None) , ( cell line: human Jurkat T cells, None) , ( protein: major histocompatibility complex class I molecules, None) 