4713
Therefore, we sought to determine whether MEK1 and ERK activities also stimulate IL-2 gene transcription .
 ERK, IL-2 gene, MEK1
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:
 ERK, IL-2 gene, MEK1