888
The aim of this study was to examine the role of metabotropic glutamate receptor 5 ( mGluR5 ) in the toxic action of methamphetamine on dopaminergic neurones in rats .
 Chemical: glutamate; Chemical: methamphetamine
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
 Entities: glutamate, methamphetamine 
Answer:
 Chemical: glutamate; Chemical: methamphetamine