13922
Increases in interferon-gamma production and natural killer cell activity in response to IL-18 are abrogated.
 ( protein: IL-18, None) , ( protein: interferon-gamma, 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: IL-18, None) , ( protein: interferon-gamma, None) 