CD23 is a 45kD glycoprotein, which is present on a subpopulation of freshly isolated peripheral blood and tonsil B cells and strongly expressed on EBV-transformed B lymphoblasts. The CD23 molecule is identical to the low affinity IgE receptor found on B cells. Expression of CD23 has been detected in neoplastic cells from cases of B cell chronic lymphocyctic leukaemia and some cases of centroblastic/centrocytic lymphoma. Source: Recombinant protein corresponding to aa48-248 from human CD23, expressed in E. coli. Molecular Weight: ~48kD (SDS-PAGE) Applications: Suitable for use in ELISA, Western Blot and Inhibition Assays.