Figure 8.

A T1-weighted image of an old specimen is shown in (A). Similar regions of the kidney are shown in a histology slice (H&E) of a contralateral kidney in (B) with magnified regions in (C–D). All 4 images are at the same magnification as the respective images of the young kidney in Figure 7. Only the CO and a portion of the OM can be seen in both (A) and (B) because the older kidney is larger. In each (A) and (B), there is one white arrow pointing at a vessel in the OM, one white arrow pointing at a vein in the CO, one blue arrow pointing at vasa rectae in the OM, two yellow arrows pointing at glomeruli, and two red arrows pointing at dilated tubules with protein casts. In (A), there are additional black arrows pointing to dilated tubules without protein casts. A 200x histology slice in (D) includes a red arrow pointing at a protein cast inside a dilated tubule, an orange arrow pointing at tubular basophilia (regeneration), and a green arrow pointing at foci of interstitial inflammation.