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These results indicate that LPS induction of kappaB-dependent gene expression in human monocytic cells requires activation of IKK2 .
 monocytic cells, IKK2, human monocytic 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:
 monocytic cells, IKK2, human monocytic cells