6684
We also analysed the post - mortem baseline levels of monoamines and amino acids in different brain regions .
 Chemical: monoamines; Chemical: amino acids
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: monoamines; Chemical: amino acids