22688
OBJECTIVES : We investigated the effects of the most selective serotonin reuptake inhibitor escitalopram on sleep rebound following REMS deprivation and , in parallel , on the activation of MCH - containing neurons .
 Chemical: serotonin; Chemical: escitalopram
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, escitalopram 
Answer:
 Chemical: serotonin; Chemical: escitalopram