1999
LAM and LPS were potent inducers of IL-6 gene expression in peripheral blood monocytes .
 ( cell type: peripheral blood monocytes, None) , ( protein: LAM, None) , ( DNA: IL-6 gene, 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:
 ( cell type: peripheral blood monocytes, None) , ( protein: LAM, None) , ( DNA: IL-6 gene, None) 