Fig. 3.

Renal histology of direct and remote I/R injury at 33 days of recovery. Representative renal histology of ipsilateral and contralateral kidneys following unilateral I/R, obtained at the time of UNx, before exposure to elevated dietary salt. Shown are representative periodic acid Schiff (PAS)-stained sections of a kidney from a sham-operated animal at day 33 (A), a contralateral injured kidney (B), and an ipsilateral injured kidney (C). Note renal tubular morphology is largely intact in both direct and remote injury. Evidence of increased interstitial cells is present in both the contralateral and ipsilateral kidneys (black arrows). Magnification is shown.