9733
We have therefore investigated the transcriptional activity of A-MYB and its regulation in several human lymphoid cell lines using co-transfection assays and show that A-MYB is transcriptionally active in all the B cell lines studied, but not in T cells .
 ( protein: A-MYB, None) , ( cell line: B cell lines, None) , ( cell type: T cells, None) , ( protein: A-MYB, None) , ( cell line: human lymphoid 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: A-MYB, None) , ( cell line: B cell lines, None) , ( cell type: T cells, None) , ( protein: A-MYB, None) , ( cell line: human lymphoid cell lines, None) 