23997
In the brain regions studied , amitraz induced a statistically significant increase in 5 - HT , NE and DA content with age interaction , but the NE increases in prefrontal cortex and hippocampus was without age interaction .
 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: 5 - HT