MyBioSource.com's Monoclonal Antibody to Alpha-2-Macroglobulin (a2M) is a Mouse monoclonal antibody. The Monoclonal Antibody to Alpha-2-Macroglobulin (a2M) was generated using A2M, alpha-2-MACROGLOBULIN, and alpha-2M as the antigen. It reacts with Rat. This antibody has been shown to work in applications such as: ELISA, Immunocytochemistry, Immunohistochemistry, Immunohistochemistry - fixed, and Western Blot.