The vomeronasal organ (VNO) or Jacobsons organ, is an auxiliary olfactory sense organ that is found in many animals and some adult humans. The VNO has two separate types of neuronal receptors, V1R and V2R, which are seven transmembrane receptors that are coupled to guanosine triphosphate binding proteins. The receptors are distinct from each other and from the large family of receptors in the main olfactory system.Store at -20°C. Stable for 12 months at -20°C *   http://www.creative-diagnostics.com/Anti-VN2R1P-PAb-207318-147.htm