NCIt definition : A mouse monoclonal antibody directed against an epitope expressed by the DEAU B-lymphoma
cell line, with potential diagnostic applications ex vivo. Anti-hairy cell leukemia
antibody DBA.44 detects an antigen expressed on a subpopulation of B-lymphocytes in
the mantle zone of lymphoid follicles. DBA.44 reacts with the majority of lymphocytes
of hairy cell leukemia (HCL).;