The CD3 components have long cytoplasmic tails that associate with cytoplasmic signal transduction molecules. This association is mediated at least in part by a double tyrosine-based motif present in a single copy in the CD3 subunits. CD3 may play a role in TCR-induced growth arrest, cell survival and proliferation. The CD3 antigen is present on 68-82% of normal peripheral blood lymphocytes, 65-85% of thymocytes and Purkynje cells in the cerebellum. It is never expressed on B or NK cells. Decreased percentages of T lymphocytes may be observed in some autoimmune diseases.

Suitable for use in Flow Cytometry. Other applications not tested.

Flow Cytometry: 20ul labels human blood cells in 100ul whole blood. Optimal dilutions to be determined by the researcher.

Store product at 4°C if to be used immediately within two weeks. For long-term storage, aliquot to avoid repeated freezing and thawing and store at -20°C. Aliquots are stable at -20°C for 12 months after receipt. Dilute required amount only prior to immediate use. Further dilutions can be made in assay buffer. Caution: FITC conjugates are sensitive to light. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.

Human thymocytes and T lymphocytes.

Supplied as a liquid in PBS, pH 7.4, 15mM sodium azide. Labeled with fluorescein isothiocyanate (FITC).

Purified

Recognizes an extracellular epitope on gamma-epsilon and delta-epsilon dimers of human CD3 complex