7193
Further experiments in slices from mGlu2 , 4 and 7 knock - out mice , as well as in an mGlu2 - deficient substrain of Wistar rat , reveal that these non - selective effects are mediated primarily by mGlu2 receptors .
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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