7014
The upTRE binds more T3R homodimers and less T3R - RXR heterodimers than the dnTRE , and T3 more readily facilitates heterodimer binding to the dn - than to the upTRE .
 T3R homodimers, T3R, RXR
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 T3R homodimers, T3R, RXR