6223
mRNA levels for IL-13R alpha1 , but not IL-4R alpha , were markedly decreased in in vitro monocyte-derived macrophages ( MDMac ), and with increasing time of monocytes in culture correlated with the loss of IL-13 regulation of lipopolysaccharide -induced TNF-alpha production .
 in vitro monocyte-derived macrophages, IL-13R alpha1, IL-13, mRNA, monocytes, TNF-alpha, MDMac, IL-4R 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:
 in vitro monocyte-derived macrophages, IL-13R alpha1, IL-13, mRNA, monocytes, TNF-alpha, MDMac, IL-4R alpha