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Previously, we showed that fibroblast conditioned medium ( FCM ) is able to inhibit both TNF mRNA accumulation and protein release in peripheral blood-derived human monocytes ( PBM ) stimulated with lipopolysaccharide ( LPS ).
 peripheral blood-derived human monocytes, human monocytes, TNF mRNA, PBM
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:
 peripheral blood-derived human monocytes, human monocytes, TNF mRNA, PBM