2340
Several cis-acting regulatory sites are required for induction of the IL-2 gene after stimulation.
 cis-acting regulatory sites, IL-2 gene, IL-2
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:
 cis-acting regulatory sites, IL-2 gene, IL-2