CD63 is a lysosomal granule-membrane glycoprotein and has been detected on the surface and in the cytoplasma of a variety of cells, particularly in platelets; surface expression indicates lysosomal secretion. CD63, present only in azurophil granules of non-stimulated neutrophils, is strongly expressed at the surface of neutrophils after activation showing that CD63 is a good marker for granule release; this phenomenon has been also reported for basophils. CD63 is present in cell line PHA blasts, K562, U937, KG1a, RAJI. Both surface and cytoplasmic reactions are reported. CD63 antigen has a diverse distribution on the surface and in the cytoplasm of many cell types including lymphoid, myeloid, endothelial cells and melanoma.
Applications:
Suitable for use in Flow Cytometry. Other applications not tested.
Recommended Dilution:
Flow Cytometry: 1:10-1:25. 10ul labels 10e6 cells in 100ul.
Optimal dilutions to be determined by the researcher.
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 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.