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. 2012 Jun 21;5:318. doi: 10.1186/1756-0500-5-318

Figure 1 .

Figure 1

Examples of NEN metastasis and the proportion of regional lymph nodes that exhibit histological tumor involvement, Chromogranin A immunohistochemical positivity or Chromogranin A transcript expression. A NEN lymph node metastasis stained with H&E stain, 20X (1a) and Chromogranin A IHC stain, 20X (1b) on contiguous slices of an involved lymph node. There was a significant difference between the proportion of positive tumors (p = 0.020), and Dunn’s post hoc tests showed a significant difference between H&E staining or CgA PCR (1c).