Cathepsin L (Cleaved) Antibody Host:Rabbit Antibody Type:Polyclonal Species Reactivity:Human, mouse, rat Application:Western blot, Immunohistochemistry Western blotting (0.5-4 μg/ml). However, the optimal concentrations should be determined individually. The antibody recognizes the mature form of Cathepsin L (25 kDa) from human, mouse and rat origins. Reactivity to other species has not been tested. Rat kidney tissue lysate can be used as a positive control.