PAK4 Antibody Host:Rabbit Antibody Type:Polyclonal Species Reactivity:Human, mouse, rat, hamster Application:Western blot Western blot analysis (0.5-4 μg/ml). However, the optimal conditions should be determined individually. The antibody recognizes ~60-70 kDa Pak4 in samples of human, mouse, and rat origins. The antibody does not cross-react with other Paks. Reactivity to other species has not been tested.