9915
In this study , we examined the effects of the selective metabotropic glutamate 2 / 3 ( mGlu2 / 3 ) receptor agonist MGS0028 on behavioral abnormalities in mice lacking the pituitary adenylate cyclase - activating polypeptide ( PACAP ) , an experimental model of psychiatric disorders such as schizophrenia and attention - deficit / hyperactivity disorder .
 Chemical: glutamate; Chemical: MGS0028
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: glutamate; Chemical: MGS0028