5091
Transactivation studies showed that both the RAR ( Ro 13-7410 ) and RXR ( Ro 25-6603 and Ro 25-7386 ) ligands were highly selective at 100 nmol/L.
 ( protein: RXR, None) , ( protein: RAR, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( protein: RXR, None) , ( protein: RAR, None) 