CD5

This antibody recognizes CD5, which is a transmembrane protein, is found on 95%of thymocytes and 72% of peripheral blood lymphocytes. In lymph nodes, the main reactivity is observed in T cell areas. CD5 is expressed by many T cell leukemia, lymphomas, and activated T cells. Occasionally, CD5 antigen is also expressed on a subset of B cells. Mantle cell lymphomas(same as diffuse centrocytic lymphomas) are CD5(+) while the follicle center cell lymphoma are CD5(-).