MyBioSource.com's S100A9 (Macrophage Marker) is a Mouse monoclonal antibody. The S100A9 (Macrophage Marker) Antibody was generated using S100A9 as the antigen. It reacts with Human. This antibody has been shown to work in applications such as: Flow Cytometry, Immunofluorescence, Immunohistochemistry, and Immunohistochemistry - fixed.