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The CD14 LPS receptor is, however, up-regulated (not down-regulated) in tolerant cells , and LPS can, in fact, still lead to activation of tolerant cells as evidenced by mobilization of the transcription factor nuclear factor kappa B ( NF-kappa B ).
 nuclear factor kappa B, tolerant cells, CD14, transcription factor, NF-kappa B, tolerant 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:
 nuclear factor kappa B, tolerant cells, CD14, transcription factor, NF-kappa B, tolerant cells