The B cell-specific cell surface molecule CD19 is expressed at all stages of B cell development , including normal plasma cells , and mediates signal transduction via interaction with cytoplasmic effector proteins .
the b cell-specific cell surface molecule cd19 is expressed at all stages of b cell development , including normal plasma cells , and mediates signal transduction via interaction with cytoplasmic effector proteins .
O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group I-protein_family_or_group I-protein_family_or_group B-protein_molecule O O O O O O B-other_name I-other_name I-other_name O O O O O O O O O O O O O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group O