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We focused on the contribution of two major products of activated monocytes , prostaglandin E2 and interleukin 1beta ( IL-1beta ), to the MCM modulatory action.
 interleukin 1beta, IL-1beta, monocytes
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:
 interleukin 1beta, IL-1beta, monocytes