8551
Furthermore , binding of recombinant Myb and Ets - 2 protein to these fragments could be competed with an excess of double stranded oligodeoxynucleotides containing canonical , but not mutated , Myb - or Ets - binding sites .
 recombinant Myb, Ets - 2 protein, Myb, Ets - binding sites
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 recombinant Myb, Ets - 2 protein, Myb, Ets - binding sites