MyBioSource.com's Complement 4d (C4d) (Acute Humoral Rejection Marker) is a Mouse monoclonal antibody. The Complement 4d (C4d) (Acute Humoral Rejection Marker) Antibody was generated using C4A, and C4B as the antigen. It reacts with Human. This antibody has been shown to work in applications such as: ELISA, and Immunofluorescence.