3912
Multiple factors including Stat5 , Elf-1 , HMG-I(Y) and GATA family proteins bind to the IL-2 response element and mutation of any one of these binding sites diminishes the activity of this element.
 Elf-1, Stat5, GATA family proteins, IL-2, IL-2 response element, HMG-I(Y)
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:
 Elf-1, Stat5, GATA family proteins, IL-2, IL-2 response element, HMG-I(Y)