2766
The small EMG values obtained in the high - dose D - MED group were comparable with those recorded in earlier studies from control animals not given any opiate .
 Chemical: D - MED
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
 Entities: D - MED 
Answer:
 Chemical: D - MED