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Regions enriched in mGlu ( 3 ) receptors were the dorsolateral entorhinal cortex , the hippocampal CA1 field , the piriform cortex , the substantia nigra , the thalamic reticular nucleus , and primary sensory thalamic nuclei .
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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