The Alexa Fluor® 647 goat anti—hamster IgG is labeled with our bright, photostable, far-red-fluorescent Alexa Fluor® 647 dye and is prepared from affinity-purified antibodies that react with IgG heavy chains and all classes of immunoglobulin light chains from Syrian hamsters. To minimize crossreactivity, it has been adsorbed against mouse and rat IgG prior to conjugation.