7677
Immunosuppressant PG490 ( triptolide ) inhibits T-cell interleukin-2 expression at the level of purine-box/nuclear factor of activated T-cells and NF-kappaB transcriptional activation .
 NF-kappaB, activated T-cells, T-cell interleukin-2, purine-box/nuclear factor
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, activated T-cells, T-cell interleukin-2, purine-box/nuclear factor