12403
We observed that after LPS stimulation of human monocytes , TNF-alpha increased to 798+/-67 pg/mL (p < .001 versus control).
 ( protein: TNF-alpha, 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: TNF-alpha, None) , ( cell type: human monocytes, None) 