Tags: Protein.
CD72 (Cluster of Differentiation 72) also known in murine biology as Lyb-2 is a protein active in the immune system of animals. It consists of two identical halves each of about 39-43 kD and is a C-type lectin. Its primarily locus of expression is B-cells where it appears to mediate aspects of B-cell – T-cell interaction. It is a ligand for CD5.