title: Null cells in peripheral blood of normals and systemic lupus erythematosus.
mesh_terms: D001402:B-Lymphocytes / Q000276:immunology*; D001666:Binding Sites, Antibody; D001667:Binding, Competitive; D002469:Cell Separation; D002499:Centrifugation, Density Gradient; D004247:DNA / Q000378:metabolism; D006801:Humans; D007104:Immune Adherence Reaction; D007136:Immunoglobulins / Q000096:biosynthesis; D008180:Lupus Erythematosus, Systemic / Q000276:immunology*; D008213:Lymphocyte Activation; D008214:Lymphocytes / Q000648:ultrastructure; D011947:Receptors, Antigen, B-Cell / Q000032:analysis; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D007136:Immunoglobulins; D011947:Receptors, Antigen, B-Cell; D004247:DNA