R&D Systems, a Bio-Techne Brand's Orexin R2/HCRTR2 Antibody is a Mouse monoclonal antibody. The Orexin R2/HCRTR2 Antibody was generated using HCRTR2 as the antigen. It reacts with Homo Sapiens, and Human. This antibody has been shown to work in applications such as: Immunohistochemistry.