NCIt definition : B-cell differentiation antigen CD72 (359 aa, 40 kDa) is encoded by the human CD72
gene. This protein plays a role in the proliferation and differentiation of B-cells.;
NCIt note : Expression of CD72 is restricted to B-lineage cells and is turned off in differentiated
antibody-secreting plasma cells. CD72 may participate in signals for B-cell proliferation
and differentiation. In the immune system, CD72 appears to be a receptor for leukocyte
activation antigen, CD100. CD72 may also be the ligand for CD5, a receptor that regulates
T-cell proliferation.;