7450
The second stage, development, we propose is the true IL-12 induced developmental stage , involving expression of Stat4 inducible proteins .
 Stat4 inducible proteins, Stat4, IL-12
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:
 Stat4 inducible proteins, Stat4, IL-12