13072
In this way, diversity in the expression and activation of Stat3 proteins may provide additional means of regulating cytokine -induced T cell responses .
 cytokine, Stat3, Stat3 proteins
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:
 cytokine, Stat3, Stat3 proteins