4549
When freshly isolated, highly enriched (>98%) T cells are examined for IFN-gamma responsiveness; these cells can respond to IFN-gamma and express beta-chain .
 ( protein: IFN-gamma, None) , ( protein: IFN-gamma, None) , ( cell type: T cells, None) , ( protein: beta-chain, 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: IFN-gamma, None) , ( protein: IFN-gamma, None) , ( cell type: T cells, None) , ( protein: beta-chain, None) 