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Washington University Experience | NEOPLASM (SELLAR) | TTF-1-positive sellar tumor - Granular cell Tumor | 2F1 Granular Cell Tumor, Sella Region (Case 2) Collagen IV WM
2F1-3 Collagen IV, which stains basement membranes, produces an interesting pattern in which edges of cells stain and not cytoplasm (Collagen IV IHC)
