Histologic sections. (A) Lung of an MHOAH mouse showing thin alveolar septa. (B) Kidney of an MHOAH mouse. (C) Lung of an M-Tg58Ru mouse showing congestion and thickening of the alveolar septa. (D) Kidney of an M-Tg58Ru mouse showing RBC congestion in the glomerular tufts and swelling of the capsular epithelium. (E) Lung of a Tg58 × Tg98 mouse showing congestion and thickening of the alveolar septa. (F ) Kidney of a Tg58 × Tg98 mouse showing RBC congestion in the glomerular tufts and swelling of the capsular epithelium. (G) Kidney of an MHOAH mouse stained with Pearl's Prussian blue and counterstained with eosin showing no deposit of stainable iron. (H) Kidney of a Tg58 × Tg98 mouse stained with Pearl's Prussian blue and counterstained with eosin showing that deposits of stainable iron are present in epithelial cells of Bowman's capsule and proximal tubules. (Original magnification × 100 for lung and × 200 for kidney.)