Alexa Fluor® 488 Rabbit Anti-Mouse IgG (H+L) is labeled with our bright, photostable, green-fluorescent Alexa Fluor 488 dye, which is spectrally similar to fluorescein. It is prepared from affinity-purified antibodies that react with IgG heavy chains and all classes of immunoglobulin light chains from mouse. To minimize cross-reactivity, it has been adsorbed against human serum prior to conjugation.