Leinco Technologies, Inc.'s Anti-Mouse IL-21R (Clone 4A9) - APC - 50 µg is a Rat monoclonal antibody. The Anti-Mouse IL-21R (Clone 4A9) - APC - 50 µg Antibody was generated using IL21, and Interleukin 21 as the antigen. It reacts with Mouse. This antibody has been shown to work in applications such as: Flow Cytometry.