5104
Binding experiments, using COS-7 cells transiently transfected with PML-RAR and the normal RAR alpha , show that AM580 has a lower affinity than ATRA for both receptors.
 ( protein: RAR alpha, None) , ( protein: PML-RAR, None) , ( cell line: COS-7 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:
 ( protein: RAR alpha, None) , ( protein: PML-RAR, None) , ( cell line: COS-7 cells, None) 