11277
Cytomegalovirus IE gene products significantly enhanced LPS stimulation of IL-6 promoter activity in both IL-6 CAT and IL-6 luciferase assays .
 ( protein: IL-6, None) , ( protein: IL-6, None) , ( protein: Cytomegalovirus IE gene products, None) , ( DNA: IL-6 promoter, 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: IL-6, None) , ( protein: Cytomegalovirus IE gene products, None) , ( DNA: IL-6 promoter, None) 