29929
Identification of an Allosteric Modulator of Serotonin Transporter with Novel Mechanism of Action .
 Chemical: Serotonin
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: Serotonin 
Answer:
 Chemical: Serotonin