The effects of age in reducing renal function.
D000136:Acid-Base Equilibrium; D000368:Aged; D000375:Aging; D001806:Blood Urea Nitrogen; D001826:Body Fluids; D005919:Glomerular Filtration Rate; D006801:Humans; D007668:Kidney / Q000098:blood supply / Q000502:physiology*; D007671:Kidney Concentrating Ability; D007684:Kidney Tubules / Q000502:physiology; D009318:Natriuresis; D012039:Regional Blood Flow; D014882:Water-Electrolyte Balance