We have located the major positive regulatory region for control of bcl-2 expression in B cells in the 5'-flanking region .
we have located the major positive regulatory region for control of bcl-2 expression in b cells in the 5'-flanking region .
O O O O O O O O O O O B-protein_molecule O O B-cell_type I-cell_type O O B-DNA_domain_or_region I-DNA_domain_or_region O