Figure 2

Haematoxilin and eosin staining, high-mobility group A1 (HMGA1) and HMGA2 immunostaining figures of well-differentiated NET (WNET) (A, E and I), insulinoma (B, F, and J), well-differentiated neuroendocrine carcinoma (WNEC) (C, G, and K), and poorly differentiated NEC (PNEC) (D, H, and L), respectively. High-mobility group A1 (E–H) and HMGA2 (I–L) showed strongly nuclear immunostaining in gastroenteropancreatic neuroendocrine tumours.