13596
Here we show that Trim24 and Trim33 cooperatively repress retinoic acid receptor - dependent activity of VL30 - class endogenous retroviruses ( ERVs ) in liver .
 Chemical: retinoic acid
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: retinoic acid