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 .
 major histocompatibility complex (MHC) class I molecules, NF-kappa B, T cells, TNF-alpha
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 major histocompatibility complex (MHC) class I molecules, NF-kappa B, T cells, TNF-alpha