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AChE has been implicated in the pathogenesis of Alzheimer ' s disease and it has been shown that it accelerates formation and increases toxicity of amyloid fibrils , which have been closely linked to the pathology of AD .
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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