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Interferon-gamma ( IFN-gamma ) is an important immunoregulatory protein produced predominantly by T cells and large granular lymphocytes ( LGL ) in response to different extracellular signals .
 ( protein: IFN-gamma, None) , ( cell type: T cells, None) , ( protein: Interferon-gamma, None) , ( cell type: large granular lymphocytes, None) , ( cell type: LGL, None) , ( protein: immunoregulatory protein, 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) , ( cell type: T cells, None) , ( protein: Interferon-gamma, None) , ( cell type: large granular lymphocytes, None) , ( cell type: LGL, None) , ( protein: immunoregulatory protein, None) 