939
In contrast , over - expression of RAR beta only poorly restored differentiation , although it could replace RAR gamma for the activation of target genes .
 GENE: RAR beta; GENE: RAR gamma
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: RAR beta; GENE: RAR gamma