6232
Both TNF-alpha and NF-kappa B are also involved in the stimulation of the pathway that leads to the expression of major histocompatibility complex (MHC) class I molecules and, hence, antigen presentation to the T cells .
 ( protein: major histocompatibility complex (MHC) class I molecules, None) , ( protein: NF-kappa B, None) , ( cell type: T cells, None) , ( protein: TNF-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: major histocompatibility complex (MHC) class I molecules, None) , ( protein: NF-kappa B, None) , ( cell type: T cells, None) , ( protein: TNF-alpha, None) 