1998
We have demonstrated that lipoarabinomannan ( LAM ) from the mycobacterial cell wall, which was virtually devoid of lipopolysaccharide ( LPS ), stimulated mononuclear phagocytes to release IL-6 in a dose-response manner .
 ( protein: LAM, None) , ( protein: IL-6, None) , ( cell type: mononuclear phagocytes, None) , ( protein: lipoarabinomannan, 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: LAM, None) , ( protein: IL-6, None) , ( cell type: mononuclear phagocytes, None) , ( protein: lipoarabinomannan, None) 