9146
IL-8 is secreted in response to inflammatory stimuli , notably bacterial products such as lipopolysaccharide ( LPS ), but little is known about the mechanisms by which these agents mediate IL-8 induction .
 ( protein: IL-8, None) , ( protein: IL-8, 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-8, None) , ( protein: IL-8, None) 