24401
Over the last decade , research on mice with a targeted inactivation of the 5 - HT transporter ( 5 - Htt , Sert , Slc6a4 ) has considerably advanced our knowledge about functions that the 5 - HTT plays in the context of emotion related to depression .
 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