7626
Jeg-3 human choriocarcinoma-induced immunosuppression : downregulation of interleukin-2 , interleukin-2 receptor alpha-chain , and its Jak/Stat signaling pathway .
 ( protein: interleukin-2, None) , ( protein: interleukin-2, None) , ( protein: interleukin-2 receptor alpha-chain, None) , ( protein: Jak/Stat, 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: interleukin-2, None) , ( protein: interleukin-2, None) , ( protein: interleukin-2 receptor alpha-chain, None) , ( protein: Jak/Stat, None) 