7452
It is perhaps possible that all of Stat4 actions on Th1 development may be exert directly by Stat4 at the IFN-gamma gene , however we suggest that, more likely, Stat4 may act to induce Th1 development through the induction of other non-cytokine genes , whose stable expression maintains the transcriptional state of a Th1 cell .
 IFN-gamma, Stat4, IFN-gamma gene, Stat4, Th1 cell, non-cytokine genes, Stat4
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:
 IFN-gamma, Stat4, IFN-gamma gene, Stat4, Th1 cell, non-cytokine genes, Stat4