8993
Significant progress has been made in gaining a detailed understanding of the transcriptional regulation of the interleukin-4 gene .
 interleukin-4 gene, interleukin-4
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:
 interleukin-4 gene, interleukin-4