2655
Modeling the binding mechanism of Alzheimer ' s A beta 1 - 4 2 to nicotinic acetylcholine receptors based on similarity with snake alpha - neurotoxins .
 Chemical: acetylcholine
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: acetylcholine