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 .
 dexamethasone, Dex
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 dexamethasone, Dex