CD9 is a type IV transmembrane glycoprotein with four transmembrane domains. CD9 on pre-B cells may play a role in cell-cell adhesion. In addition, CD9 may play a role in signal transduction mediated by interaction with low molecular weight GTP binding proteins. CD9 is expressed on early B cells, eosinophils, basophils and activated T cells and is a major component of the platelet cell surface. It is also expressed on most non-T acute lymphoblastic leukemia cells and on some acute myeloid and chronic lymphoid leukemias.

Titering of the CD9 antibody may be required for optimal performance.

Recombinant full-length human protein was used as the immunogen for the CD9 antibody.

Store the CD9 antibody at 2-8oC (with azide) or aliquot and store at -20oC or colder (without azide).