1371
This nicotine effect was blocked by pretreatment with the non - specific nicotinic acetylcholine ( nACh ) receptor antagonist mecamylamine , or the 5 - HT1A antagonist WAY100635 .
 Chemical: nicotine; Chemical: acetylcholine; Chemical: mecamylamine; Chemical: WAY100635
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: nicotine; Chemical: acetylcholine; Chemical: mecamylamine; Chemical: WAY100635