2521
Temporal analysis of the IL-4 down-regulatory effect on the IL-2- , IL-3- , or GM-CSF- induced proinflammatory cytokine gene expression in monocytes provided evidence that IL-4 acts predominantly on the post-transcriptional level .
 IL-4, monocytes, IL-4
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:
 IL-4, monocytes, IL-4