3686
These data suggest that lower tissue serotonin stores in adolescents limit fenfluramine - stimulated serotonin release and so contribute to the lesser anxiogenic effects of fenfluramine .
 Chemical: serotonin; Chemical: fenfluramine; Chemical: serotonin; Chemical: fenfluramine
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: serotonin; Chemical: fenfluramine; Chemical: serotonin; Chemical: fenfluramine