21827
In this study , changes in gene expression at the transcription level were evaluated in HCT - 116 colon cancer cells after exposure to P . americana ethanol extract and its water fraction using the Human Cancer Pathway Finder PCR Array .
 Chemical: ethanol
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: ethanol