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Resolution of the NF-kappa B complex in gel shift analysis shows that the binding protein , mobilized in naive Mono Mac 6 cells , consists mainly of p50 -p65 heterodimers , while in tolerant cells , the p50 homodimer is predominant.
 p50 homodimer, -p65, tolerant cells, p50, NF-kappa B complex, NF-kappa B, p50 -p65 heterodimers, binding protein, naive Mono Mac 6 cells, p50
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:
 p50 homodimer, -p65, tolerant cells, p50, NF-kappa B complex, NF-kappa B, p50 -p65 heterodimers, binding protein, naive Mono Mac 6 cells, p50