Histology of a native and a diseased kidney.

<p>Histological slides (H&E, 40x) of a native kidney (<b>A</b>) and a kidney five days after acute injury (<b>B</b>). Compared to the native kidney the diseased kidney shows main hallmarks of acute renal injury like cellular swelling, necrosis and tubular dilatation. Examples for necrosis and tubular dilatation are marked with arrows and stars, respectively.