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A selective and structurally novel mGlu ( 2 / 3 ) receptor agonist , 2 - amino - 4 - fluorobicyclo [ 3 . 1 . 0 ] hexane - 2 , 6 - dicarboxylic acid ( LY459477 ) was tritiated and the distribution of mGlu ( 2 ) and mGlu ( 3 ) receptors was studied in transgenic mice lacking either mGlu ( 2 ) , mGlu ( 3 ) or both receptors .
 Chemical: 2 - amino - 4 - fluorobicyclo [ 3 . 1 . 0 ] hexane - 2 , 6 - dicarboxylic acid; Chemical: LY459477
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: 2 - amino - 4 - fluorobicyclo [ 3 . 1 . 0 ] hexane - 2 , 6 - dicarboxylic acid; Chemical: LY459477