17717
In summary , our results indicate that NPS facilitates memory formation and prolongs the retention of memory through activation of the NPSR , and mitigates amnesia induced by blockage of glutamatergic or cholinergic system or by A beta 1 - 42 , suggesting that NPS / NPSR system may be a new target for enhancing memory and treating amnesia .
 None
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