1708
The goal of this study was to assess the interactive effects of chronic anabolic androgenic steroid ( AAS ) exposure and brain serotonin ( 5 - hydroxytryptamine , 5 - HT ) depletion on behavior of pubertal male rats .
 Chemical: steroid; Chemical: serotonin; Chemical: 5 - hydroxytryptamine; Chemical: 5 - HT
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: steroid; Chemical: serotonin; Chemical: 5 - hydroxytryptamine; Chemical: 5 - HT