14435
One of the essential proteins which bound to the enhancer was similar or identical to members of the C/EBP family of transcription factors required for both IL-1 -and LPS -specific induction of the IL-6 gene (i.e., the NF-IL6 proteins ).
 NF-IL6 proteins, IL-1, C/EBP family, IL-6 gene, transcription factors
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:
 NF-IL6 proteins, IL-1, C/EBP family, IL-6 gene, transcription factors