Laboratory studies on the aging kidney.
D000136:Acid-Base Equilibrium; D000368:Aged; D000375:Aging / Q000502:physiology*; D001806:Blood Urea Nitrogen; D005260:Female; D006801:Humans; D007668:Kidney / Q000502:physiology*; D007677:Kidney Function Tests; D008297:Male; D008875:Middle Aged; D011704:Pyelonephritis / Q000175:diagnosis; D014567:Urography; D014882:Water-Electrolyte Balance