Alexa Fluor® 546 Goat Anti-Mouse IgG (H+L) is labeled with our bright, photostable, orange-fluorescent Alexa Fluor 546 dye. 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 IgG and human serum prior to conjugation. We also provide a version of the same antibody that has been cross-adsorbed against additional species (A-11030).