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Spleen resection—Patient 1.
The spleen's sinusoids are filled with groups of macrophages (A, hematoxylin–eosin, original magnification × 8). At higher magnification (B, hematoxylin-eosin, original magnification × 30 and C, PAS staining, original magnification × 20), the macrophages have a greyish fibrillary cytoplasm, weakly positive for PAS.
