7457
The activation of STAT3 was not found in human eosinophils , monocytes , and HL-60 cells , although the STAT3 protein was expressed in these cells.
 HL-60 cells, STAT3, human eosinophils, STAT3 protein, STAT3, monocytes
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:
 HL-60 cells, STAT3, human eosinophils, STAT3 protein, STAT3, monocytes