Specificity:

Mouse Anti-Human CD3 (Clone UCHT-1) recognizes Human Human CD3. This monoclonal antibody was purified using multi-step affinity chromatography methods such as Protein A or G depending on the species and isotype. Anti-Human CD3 recognizes a (Mr 22-28 kDa) T-cell surface glycoprotein.¹ The epitope recognized by the CD3 antibody is expressed on a constant region of the epsilon chain of the CD3 antigen/T-cell receptor complex (TCR).²

The human CD3 antigen is expressed on approximately 60-80% of human peripheral blood lymphocytes, 20-40% of splenic lymphocytes, the majority of T-CLL and approximately 70% of T-ALL cells.

Background:

Anti-CD3 may be used for enumerating immunocompetent T-lymphocytes in peripheral blood. Clone UCHT-1 is also useful in histology for localization of T-lymphocytes in tissue and may be used to enrich T-cells by cell sorting. This T-cell marker has also been used to determine T-versus B-cell lymphomas and leukemias.

Fluorescein (FITC) is a small fluorescent organic molecule with a molecular weight of 473 daltons with an absorbance maximum of ~492 nm and an emission maximum of ~518 nm.

Known Species Cross Reactivity: Hu+