4992
In a panel of 32 B-cell lines , A-myb was very strongly expressed in most Burkitt's lymphoma ( BL ) cell lines, but weak or negative in 2 pre-B acute lymphoblastic leukemia ( ALL ), 4 non-Hodgkin's lymphoma ( NHL ), 6 Epstein-Barr virus-immortalized lymphoblastoid cell lines , and 6 myeloma lines .
 ( cell line: B-cell lines, None) , ( cell line: myeloma lines, None) , ( cell line: Epstein-Barr virus-immortalized lymphoblastoid cell lines, None) , ( DNA: A-myb, 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:
 ( cell line: B-cell lines, None) , ( cell line: myeloma lines, None) , ( cell line: Epstein-Barr virus-immortalized lymphoblastoid cell lines, None) , ( DNA: A-myb, None) 