12668
The role of Stat4 in species-specific regulation of Th cell development by type I IFNs .
 type I IFNs, 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:
 type I IFNs, Stat4