3316
Agonists and positive allosteric modulators ( PAMs ) of alpha 7 nicotinic acetylcholine receptors ( nAChRs ) are currently being considered as novel therapeutic approaches for managing cognitive deficits in schizophrenia and Alzheimer ' s disease .
 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