tokens: Pax-5a was detectable in pro- , pre- , and mature B-cell lines , but not in two plasmacytomas ; Pax-5b was shown to be present at low levels in mature B-cell lines and , unexpectedly , in one plasma cell line , but not in pro-B-cell or T-cell lines .
folded_tokens: pax-5a was detectable in pro- , pre- , and mature b-cell lines , but not in two plasmacytomas ; pax-5b was shown to be present at low levels in mature b-cell lines and , unexpectedly , in one plasma cell line , but not in pro-b-cell or t-cell lines .
labels: B-protein_molecule O O O O O O O O O O O O O O O O B-tissue O B-protein_molecule O O O O O O O O O B-cell_line I-cell_line I-cell_line O O O O O O O O O O O O O O O O O O