Cell Signaling Technology's CD81 (E2K9V) Rabbit mAb (BSA and Azide Free) is a Rabbit monoclonal antibody. The CD81 (E2K9V) Rabbit mAb (BSA and Azide Free) Antibody was generated using CD81 as the antigen. It reacts with Homo Sapiens, and Human. This antibody has been shown to work in applications such as: Flow Cytometry, Immunocytochemistry, Immunofluorescence, and Western Blot.