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A, pancreatic NET with hematoxylin and eosin staining (magnification, ×20); B, pancreatic NET with reticulin staining (magnification, ×10); C, bronchogenic carcinoid tumor with synaptophysin staining (magnification, ×20); D, thymic carcinoid tumor with chromogranin A staining (magnification, ×40) from patients 2, 4, 5, and 6 respectively; E, thymic carcinoid tumor; F, pancreatic NET; G, thymic carcinoid tumor from patients 3, 4, and 6 respectively.
