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Pathological lesions on kidney allograft biopsies associated with chronic calcineurin inhibitor nephrotoxicity. (A) Areas of interstitial fibrosis and tubular atrophy alternating with preserved tubulointerstitium produce a picture of “striped fibrosis.” (B) Peripheral arteriolar hyalinosis (arrow). Masson’s trichrome stain. (Images courtesy of Dr. Zoltan Laszik.)
