Anti-CD42a antibodies are used in antigen-specific immunodetection in biological samples. The target CD42a is a known alias name of the protein glycoprotein IX platelet, encoded by the GP9 gene in humans. This 177-amino acid residue protein is known to be involved in cell adhesion, among other biological processes. It is localized to the membrane of the cell and features glycosylated post-translational modifications. It is reported to be expressed in the bone marrow. The term GPIX is another synonym for CD42a. Some CD42a antibodies may have been used in research and have associated citations. These antibodies are most commonly used in Flow Cytometry experiments, among other applications.