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Consistent with the ability of IL-4 to regulate eosinophil responses , IL-4 signaling molecules are present in human eosinophils .
 IL-4 signaling molecules, IL-4, IL-4, human eosinophils, eosinophils
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 signaling molecules, IL-4, IL-4, human eosinophils, eosinophils