10486
Emphasis is placed on cytokines that have been studied in periodontitis , principally TNF-alpha , IL-1 , IL-6 , IL-8 and beta-interferon .
 ( protein: IL-6, None) , ( protein: TNF-alpha, None) , ( protein: IL-1, None) , ( protein: cytokines, None) , ( protein: beta-interferon, 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-6, None) , ( protein: TNF-alpha, None) , ( protein: IL-1, None) , ( protein: cytokines, None) , ( protein: beta-interferon, None) , ( protein: IL-8, None) 