CD56, a 175-220kD glycoprotein, is a novel member of Ig super family. It is expressed as 3 major isoforms and consists of 5 Ig-like domains and 2 Fibronectin-type III domains in the extracellular region. It is widely expressed in nervous system, on NK cells and a specific set of T-cells. CD56+ NK cells and T-cells are unique in their ability to mediate cell-mediated cytotoxicity against certain tumor cell targets without MHC restriction. Other physiological functions of CD56 include mediating cell adhesion through homophilic and heterophilic interaction and activating intracellular signaling pathways resulting in neutrite extension and fasciculation, cell migration and synapses formation in brain. It is also vital for neuronal development and plasticity in adult brain. It is used as a tumor marker in various cancers such as NK lymphomas and Merkel cell carcinoma.
Applications:
Suitable for use in Immunohistochemistry. Other applications not tested.
Recommended Dilution:
Immunohistochemistry (formalin fixed paraffin embedded): 1:25-1:75
Immunohistochemistry: Frozen
Optimal dilutions to be determined by the researcher.
Positive Control:
Neuroblastoma
Storage and Stability:
May be stored at 4 degrees C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Aliquots are stable for at least 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.