The Helios (E4L5U) Rabbit mAb (BSA and Azide Free) Antibody from Cell Signaling Technology is a Rabbit Monoclonal antibody to IKZF2. This antibody recognizes Homo Sapiens, Human, and Mouse antigen. The Helios (E4L5U) Rabbit mAb (BSA and Azide Free) Antibody has been shown to work in the following applications: Immunohistochemistry, Immunohistochemistry - fixed, and Western Blot.