CD8 molecule consists of two chains, termed alpha and beta chain, which are expressed as a disulphide-linked heterodimer or homodimer. CD8 is expressed on T cell subset (cytotoxic/suppressor T cells), thymocytes and NK cells.

CD8a antibody with azide can be stored at 2-8°C. The azide-free format should be aliquoted and stored at -20°C or colder.