Fig 1. Acute tubular necrosis may be manifest only by
regenerating flattened tubular epithelium without frank necrosis of
individual tubular cells, as shown in some tubules to the right of the
glomerulus, by bleebbing and individual cell degenration (top left), or
by frank necrosis ( middle). There is minimal accompanying interstitial
infiltrate (periodic acid Schiff stain, x 100).