2706
It remains to be tested whether a selective decrease in GABA synthesis in parvalbumin - containing GABA neurons could cause attention deficits .
 Chemical: GABA; Chemical: GABA
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: GABA; Chemical: GABA