The kidneys in urinary infection.
D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D011704:Pyelonephritis / Q000150:complications*; D014552:Urinary Tract Infections / Q000150:complications*; D014567:Urography; D014718:Vesico-Ureteral Reflux / Q000150:complications*