8208
In order to define the transcriptional network associated with oxidative stress , we utilized the MEME and MAST programs to analyze the promoter regions of 57 amoebic genes that had increased expression specifically in response to H ( 2 ) O ( 2 ) exposure .
 Chemical: H ( 2 ) O ( 2 )
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: H ( 2 ) O ( 2 )