CD79b PE (ASR) , Catalog number 335816 ; || Hematology: || The CD79b antibody recognizes an epitope on the extracellular domain of a 3640 kilodalton (kDa) type I membrane glycoprotein. Immunoglobulin (Ig) antigen receptors are composed of a non-covalently associated complex of Ig and two other proteins, Iga and Igb, which have been designated as CD79a and CD79b, respectively. || antigen