1997
In this regard, the cytokine interleukin 6 ( IL-6 ) may play a role in the clinical manifestations and pathological events of tuberculosis infection .
 ( protein: tuberculosis infection, None) , ( protein: interleukin 6, None) , ( protein: IL-6, None) , ( protein: cytokine, 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: tuberculosis infection, None) , ( protein: interleukin 6, None) , ( protein: IL-6, None) , ( protein: cytokine, None) 