23995
After the last dose of amitraz , NE , DA and 5 - HT and its metabolites levels were determined in the brain regions hypothalamus , midbrain , prefrontal cortex , striatum and hippocampus by HPLC .
 Chemical: amitraz; Chemical: 5 - HT
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: amitraz; Chemical: 5 - HT