1776
In other neuroblastoma cell lines , such as SK-N-Be(2) , the lack of PMA induction of differentiation was correlated with the lack of NF-kappa B activation .
 ( protein: NF-kappa B, None) , ( cell line: neuroblastoma cell lines, None) , ( cell line: SK-N-Be(2), 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) , ( cell line: SK-N-Be(2), None) 