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. 2006 Aug 15;175(4):367–369. doi: 10.1503/cmaj.051668

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Fig. 3: A: Renal lesion showing extensive lymphoplasmacytic inflammatory infiltrate with scattered eosinophils; note interstitial fibrosis and almost complete loss of tubules (hematoxylin–eosin stain, original magnification × 400). B: Many inflammatory cells stain positive for IgG4 (immunoperoxidase, original magnification × 400).