in rattus norvegicus (norway rat), there is broad expression of trpv2 in the adrenal glands and the lungs, being most present in the adrenal glands. trpv2 is also present in the thymus and spleen, but not in high amounts. without using any external growth factors, trpv2 is highly specific to the plasma cell membrane in rat adult dorsal root ganglions, cerebral cortex, and arterial muscle cells.