16211
We applied RA and / or dexamethasone ( Dex ) as activators of the pathways and investigated mRNA and protein expression of their receptors and of tTG and BDNF as well as tTG activity and BDNF secretion .
 Chemical: dexamethasone; Chemical: Dex
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: dexamethasone, Dex 
Answer:
 Chemical: dexamethasone; Chemical: Dex