CD20 is a B-lineage-specific gene expressed at the pre-B-cell stage of B-cell development that disappears on differentiation to plasma cells .
cd20 is a b-lineage-specific gene expressed at the pre-b-cell stage of b-cell development that disappears on differentiation to plasma cells .
B-protein_molecule O O B-DNA_domain_or_region I-DNA_domain_or_region O O O O O O B-other_name I-other_name O O O O O B-cell_type I-cell_type O