The Alexa Fluor 568 goat anti—human IgG is labeled with our bright, red-fluorescent Alexa Fluor 568 dye (which is spectrally similar to Rhodamine Red dye) and is prepared from affinity-purified antibodies that react with IgG heavy chains and all classes of immunoglobulin light chains from human. To minimize crossreactivity, it has been adsorbed against mouse, rabbit and bovine serum prior to conjugation.