14021
NF-kappa B activation , minimal in unstimulated cells , was substantially up-regulated by fibrinogen .
 fibrinogen, NF-kappa B, unstimulated cells
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:
 fibrinogen, NF-kappa B, unstimulated cells