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Since salicylates have been reported to inhibit NF-kappa B activation by preventing the degradation of its inhibitor I kappa B , we studied a potential inhibition of this pathway by acetylsalicylate ( aspirin ) in human umbilical vein endothelial cells ( HUVECs ).
 ( protein: I kappa B, None) , ( cell line: HUVECs, None) , ( cell line: human umbilical vein endothelial cells, 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:
 ( protein: I kappa B, None) , ( cell line: HUVECs, None) , ( cell line: human umbilical vein endothelial cells, None) , ( protein: NF-kappa B, None) 