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The findings also suggest that a later feedback "talking" may exist between eosinophils and Th2 lymphocytes .
 eosinophils, Th2 lymphocytes
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:
 eosinophils, Th2 lymphocytes