14645
Another sequence element , microA , was identified in the mu enhancer that binds the product of the ets-1 proto-oncogene .
 mu enhancer, ets-1 proto-oncogene, sequence element, microA
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:
 mu enhancer, ets-1 proto-oncogene, sequence element, microA