5424
HER2 overexpressing cells showed a single prominent DNase I hypersensitive site near a conserved and hitherto unrecognized ets response element ( GAGGAA ) , located 38 bases down - stream from the CAAT box and directly 5 ' of the TATA box in the human HER2 promoter .
 HER2, DNase I, ets, human HER2 promoter
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 HER2, DNase I, ets, human HER2 promoter