Constitutive expression of specific interferon isotypes in peripheral blood leukocytes from normal individuals and in promonocytic U937 cells .
constitutive expression of specific interferon isotypes in peripheral blood leukocytes from normal individuals and in promonocytic u937 cells .
B-other_name I-other_name O O B-protein_family_or_group I-protein_family_or_group O B-cell_type I-cell_type I-cell_type O B-multi_cell I-multi_cell O O B-cell_line I-cell_line I-cell_line O