This polyclonal Donkey anti-rabbit IgG antibody reacts with the heavy chains of rabbit IgG and with the light chains common to most rabbit immunoglobulins. No cross-reactivity has been detected against non-immunoglobulin serum proteins. This antibody has been solid-phase absorbed to ensure minimal cross-reaction with rat, human, bovine, horse, and mouse immunoglobulins, but it may cross-react with other subclasses of rabbit immunoglobulins.