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Our results implicate C/EBP beta as an important regulator of TNF alpha by myelomonocytic cells .
 C/EBP beta, myelomonocytic cells, TNF alpha
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:
 C/EBP beta, myelomonocytic cells, TNF alpha