27719
At PN63 , in the brainstem , there was a decrease in choline transporter , a female - only decrease in 5HT1A and a male - only increase in 5HT2 receptor binding .
 Chemical: choline
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: choline