2273
The active compounds did not inhibit IL-1 -induced production of IL-6 in fibroblasts , showing the cell selectivity of the effect.
 ( cell type: fibroblasts, None) , ( protein: IL-6, None) , ( protein: IL-1, 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: fibroblasts, None) , ( protein: IL-6, None) , ( protein: IL-1, None) 