23991
The effects of amitraz oral exposure ( 20 , 50 and 80mg / kg bw , 5 days ) on brain region monoamine levels of male rats at 30 and 60 days of age were examined .
 Chemical: amitraz; Chemical: monoamine
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: monoamine