14759
Antibody cross-linking of TR55 , in the absence of exogenous TNF-alpha , induced maximal HIV-1 expression, an up-modulation of surface TR75 , and nuclear NF-kappa B activity in OM-10.1 cultures.
 ( protein: TR75, None) , ( protein: exogenous TNF-alpha, None) , ( protein: NF-kappa B, None) , ( protein: TR55, 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: TR75, None) , ( protein: exogenous TNF-alpha, None) , ( protein: NF-kappa B, None) , ( protein: TR55, None) 