2974
I kappa B proteins inhibit DNA binding and prevent nuclear uptake of NF-kappa B complexes .
 I kappa B proteins, NF-kappa B complexes
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:
 I kappa B proteins, NF-kappa B complexes