22507
These results support the concept that AChE inhibition is able to recruit nAChR - dependent glutamate transmission in the hippocampus and such a mechanism can contribute to the acute neurotoxicological actions of soman .
 glutamate
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 glutamate