13940
Using this RAR-selective antagonist , and RXR and RAR agonist , we demonstrate the RAR -mediated signaling pathway is important for differentiation and apoptosis of myeloid leukemic cells .
 ( protein: RAR, None) , ( protein: RAR, None) , ( cell type: myeloid leukemic cells, None) , ( protein: RXR, 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: RAR, None) , ( protein: RAR, None) , ( cell type: myeloid leukemic cells, None) , ( protein: RXR, None) 