19220
MlatA1 ( LD50i . v . = 0 . 064 mg / kg ) antagonizes with both fetal and adult nicotinic acetylcholine receptor ( nAChR ) as well as alpha - 7 neuronal nAChR in a dose - dependent way .
 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