6687
The CPF group also exhibited increased levels of dopamine metabolism in the hippocampus and decreased levels of gamma - aminobutyric acid ( GABA ) and glutamate in the striatum compared to the vehicle group .
 Chemical: CPF; Chemical: dopamine; Chemical: gamma - aminobutyric acid; Chemical: GABA; Chemical: glutamate
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: CPF; Chemical: dopamine; Chemical: gamma - aminobutyric acid; Chemical: GABA; Chemical: glutamate