1778
NF-kappa B was not activated by retinoic acid , which induced morphological differentiation of all the neuroblastoma cell lines used in the present study.
 ( protein: NF-kappa B, None) , ( cell line: neuroblastoma cell lines, 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: NF-kappa B, None) , ( cell line: neuroblastoma cell lines, None) 