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We have here investigated the role of group I metabotropic glutamate receptors ( mGluRs ) in the basolateral amygdala ( BLA ) pre - infra - limbic ( PL - IL ) divisions of the medial prefrontal cortex ( mPFC ) neuron connections after carrageenan - induced inflammatory pain in the rat .
 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