21465
In addition , the degree of inhibition of brain acetylcholinesterase ( AChE ) was evaluated for both the soluble and particulate forms of the enzyme , as well as AChE gene expression .
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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:
 None