2655
In comparison to other activators of NF-kappa B such as phorbol myristate acetate or tumor necrosis factor , we did not detect changes in the tyrosine phosphorylation status of I kappa B alpha following treatment with either of these agents.
 ( protein: tumor necrosis factor, None) , ( protein: NF-kappa B, None) , ( protein: I kappa B alpha, 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) , ( protein: NF-kappa B, None) , ( protein: I kappa B alpha, None) 