9823
Recent studies from our laboratory have indicated that protein tyrosine phosphatase ( PTPase ) inhibitors can down-modulate the tumor necrosis factor ( TNF )-mediated activation of the nuclear transcription factor NF-kappa B in ML-1a , a monocytic cell line (Singh and Aggarwal, J. Biol. Chem. 1995: 270: 10631).
 ( protein: tumor necrosis factor, None) , ( protein: protein tyrosine phosphatase, None) , ( protein: TNF, None) , ( cell line: ML-1a, None) , ( protein: nuclear transcription factor NF-kappa B, None) , ( protein: PTPase, None) , ( cell line: monocytic cell line, 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: protein tyrosine phosphatase, None) , ( protein: TNF, None) , ( cell line: ML-1a, None) , ( protein: nuclear transcription factor NF-kappa B, None) , ( protein: PTPase, None) , ( cell line: monocytic cell line, None) 