The Alexa Fluor 635 goat anti—rabbit IgG is labeled with our far-red—fluorescent Alexa Fluor 635 dye and is prepared from affinity-purified antibodies that react with IgG heavy chains and all classes of immunoglobulin light chains from rabbit. To minimize crossreactivity, it has been adsorbed against human IgG, human serum, mouse IgG, mouse serum and bovine serum. We also provide a highly cross-adsorbed version of this same antibody (Cat. no. A-31577).