5703
We found that cortisol incubation induced a decrease in IL-1ra mRNA expression and a significant inhibition of IL-1ra protein secretion in cell cultures of human peripheral monocytes stimulated with the bacterial endotoxin lipopolysaccharide ( LPS ).
 ( RNA: IL-1ra mRNA, None) , ( cell type: human peripheral monocytes, None) , ( protein: IL-1ra protein, None) , ( protein: IL-1ra, 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:
 ( RNA: IL-1ra mRNA, None) , ( cell type: human peripheral monocytes, None) , ( protein: IL-1ra protein, None) , ( protein: IL-1ra, None) 