4155
In contrast, engagement of the TCR by class II MHC/superantigen , either with or without CD28 ligation, resulted in the induction of NF-AT , AP-1 , and NF-kappaB as well as IL-2 production .
 NF-kappaB, IL-2, CD28, AP-1, NF-AT, TCR, class II MHC/superantigen
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:
 NF-kappaB, IL-2, CD28, AP-1, NF-AT, TCR, class II MHC/superantigen