The Cathepsin K (E7U5N) Rabbit mAb (BSA and Azide Free) Antibody from Cell Signaling Technology is a Rabbit Monoclonal antibody to Cathepsin K, and CTSK. This antibody recognizes Mouse antigen. The Cathepsin K (E7U5N) Rabbit mAb (BSA and Azide Free) Antibody has been shown to work in the following applications: Immunohistochemistry, Immunohistochemistry - fixed, and Western Blot.