1367
The effect of antioxidants on tumor necrosis factor appeared to be species specific, with no effect on LPS -induced tumor necrosis factor in murine cells, but with inhibition in human monocytes .
 ( protein: tumor necrosis factor, None) , ( cell type: human monocytes, 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: tumor necrosis factor, None) , ( cell type: human monocytes, None) 