2074
Both antioxidants inhibited TNF -or PMA- induced NF-kappa B activity in U1 cells , as well as the sustained NF-kappa B activity permanently induced by the virus itself in chronically HIV -infected U937 cells .
 ( cell line: U937 cells, None) , ( protein: TNF, None) , ( cell line: U1 cells, None) , ( protein: NF-kappa B, None) , ( protein: NF-kappa B, 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 line: U937 cells, None) , ( protein: TNF, None) , ( cell line: U1 cells, None) , ( protein: NF-kappa B, None) , ( protein: NF-kappa B, None) 