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 .
 B-cell lines, myeloma lines, Epstein-Barr virus-immortalized lymphoblastoid cell lines, A-myb
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 B-cell lines, myeloma lines, Epstein-Barr virus-immortalized lymphoblastoid cell lines, A-myb