1873
Ii kappa B-2 is a site of positive regulation in B-cell lines and a site of negative regulation in H9 T cells , myelomonocytic , and glial cell lines .
 ( DNA: Ii kappa B-2, None) , ( cell line: B-cell lines, None) , ( cell line: H9 T 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: Ii kappa B-2, None) , ( cell line: B-cell lines, None) , ( cell line: H9 T cells, None) 