The Tryptase (E7M2U) Rabbit mAb (BSA and Azide Free) Antibody from Cell Signaling Technology is a Rabbit Monoclonal antibody to TPSAB1. This antibody recognizes Homo Sapiens, Human, and Mouse antigen. The Tryptase (E7M2U) Rabbit mAb (BSA and Azide Free) Antibody has been shown to work in the following applications: Immunohistochemistry, and Immunohistochemistry - fixed.