CD23-RD1, HD50, 0.5 mL, ASR

The CD23 antigen (also called B6) is a 45 kDa transmembrane glycoprotein associated with MHC Class II antigen, which belongs to the C-type lectin family. CD23 is the low affinity receptor for IgE (FcεRII). CD23 antigen is expressed on B lymphocytes, monocytes and follicular dendritic cells (FDC). Expression of CD23 by B lymphocytes is up-regulated following mitogen or antigen activation. Soluble forms of CD23 are generated by proteolytic cleavage of the membrane molecule.