9515
Stable transfection of U937 cells with sense or antisense RXR-alpha cDNA suggests a role for RXR-alpha in the control of monoblastic differentiation induced by retinoic acid and vitamin D .
 ( DNA: antisense RXR-alpha cDNA, None) , ( protein: RXR-alpha, None) , ( cell line: U937 cells, 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:
 ( DNA: antisense RXR-alpha cDNA, None) , ( protein: RXR-alpha, None) , ( cell line: U937 cells, None) 