29335
In the current study , SHR , Wistar - Kyoto ( WKY ) and Wistar ( WIS ) rats received a therapeutically relevant dose of methylphenidate ( 1 . 5mg / kg , p . o . ) or vehicle during adolescence and then OFC and mPFC DAT function and cellular expression were assessed during adulthood .
 Chemical: methylphenidate
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: methylphenidate 
Answer:
 Chemical: methylphenidate