NRK and lung adenocarcinoma: To investigate whether Nrk is expressed in vascular cells, we examined the expression of mouse Nrk (mNrk) and human Nrk (hNrk) by western blot analysis of mouse VSMCs (mVSMCs), rat VSMCs (A10, rVSMCs), human VSMCs (hVSMCs), human umbilical vein endothelial cells (HUVECs), human coronary artery endothelial cells (HCAECs), human pulmonary artery endothelial cells (HPAECs), C2C12 (mouse myoblasts) and A549 cells (human lung adenocarcinoma).