Kidney Tissue (IMAGE) Johns Hopkins Medicine Caption The histologic cross section of healthy kidney tissue on the left shows renal tubules (one seen within yellow circle) that reabsorb water and organic materials while secreting wastes. On the right, a cross section of a kidney impacted by acute interstitial nephritis shows inflammation and swelling of the tubules (as seen within the black circle). Credit Division of Nephrology, Yale University School of Medicine Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.