6338
In this study, we have investigated the effects of selenium , an integral component of glutathione peroxidase ( GPX ), on NF-kappa B activation .
 NF-kappa B, glutathione peroxidase, GPX
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-kappa B, glutathione peroxidase, GPX