Fig. 2From: NKX2.2, PDX-1 and CDX-2 as potential biomarkers to differentiate well-differentiated neuroendocrine tumorsRepresentative immunostain of NKX2.2 and PDX-1 in well-differentiated neuroendocrine tumor of the duodenum (a, b), appendix (c, d), colorectum (e, f), and stomach (g, h), respectively. Original magnification, 400×Back to article page