tokens: Virtually all B-cell lines , with the exception of some myeloma cell lines , are positive for BSAP , which is the transcription factor for promoters for several B-cell markers , including VpreB1 , lambda 5 , CD19 , and CD20 .
folded_tokens: virtually all b-cell lines , with the exception of some myeloma cell lines , are positive for bsap , which is the transcription factor for promoters for several b-cell markers , including vpreb1 , lambda 5 , cd19 , and cd20 .
labels: O O B-cell_line I-cell_line O O O O O O B-cell_line I-cell_line I-cell_line O O O O B-protein_molecule O O O O B-protein_family_or_group I-protein_family_or_group O B-DNA_domain_or_region O O B-protein_family_or_group I-protein_family_or_group O O B-protein_molecule O B-protein_molecule I-protein_molecule O B-protein_molecule O O B-protein_molecule O