1593
Gel shift analyses demonstrate that NF-kappa B nuclear translocation is stimulated primarily by IL-1 rather than by antigen receptor signals .
 NF-kappa B, antigen receptor, IL-1
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, antigen receptor, IL-1