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Impairments in Group II mGlu receptor expression and function have been implicated in the pathophysiology of schizophrenia , as have multiple steps in the kynurenine metabolism pathway .
 Chemical: kynurenine
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: kynurenine