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Targeting metabotropic glutamate receptor subtype mGluR5 has emerged as a cognitive - enhancing strategy in neuropsychiatric disorders , but synaptic and cellular actions of mGluR5 in the mPFC remain to be determined .
 Chemical: glutamate
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: glutamate