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Figure 2 Histologic sections of a myocardial biopsy specimen from a patient with chronic heart failure before (upper left panel) and after (upper right panel) treatment with furosemide. Histologic sections of a myocardial biopsy specimen from a patient before (lower left panel) and after (lower right panel) treatment with torasemide. (Picrosirius red stain; magnification x20.) CVF = collagen volume fraction.
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