6015
Similar synergistic activation was observed in the IL - 8 promoter , which also contains both NF - IL6 and NF - kappa B binding sites .
 IL - 8 promoter, NF - IL6, NF - kappa B binding sites
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 IL - 8 promoter, NF - IL6, NF - kappa B binding sites