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Exposing the cells to 1600 micro g / ml of the water fraction resulted in several gene changes that may also be beneficial in the treatment of colon cancer : NME4 , TEK , and THBS1 .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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