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In all cells tested, IL-10 activated Stat1 and Stat3 and induced the formation of three distinct DNA binding complexes that contained different combinations of these two transcription factors .
 DNA binding complexes, IL-10, Stat1, transcription factors, Stat3
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:
 DNA binding complexes, IL-10, Stat1, transcription factors, Stat3