Miltenyi Biotec's IL-21 Antibody, anti-human, PE, REAfinity™ is a Human monoclonal antibody. The IL-21 Antibody, anti-human, PE, REAfinity™ was generated using IL21, and Interleukin 21 as the antigen. It reacts with Human. This antibody has been shown to work in applications such as: Flow Cytometry.