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. Author manuscript; available in PMC: 2013 Oct 23.
Published in final edited form as: Arch Pathol Lab Med. 2012 Jun;136(6):610–617. doi: 10.5858/arpa.2011-0371-OA

Figure 1.

Figure 1

Examples of quantitative human epidermal growth factor receptor 2 (HER2/neu) immunohistochemistry (IHC) scoring in gastroesophageal specimens based on consensus guidelines. A, Gastric adenocarcinoma specimen with HER2/neu IHC score of 0. B, Gastric adenocarcinoma specimen demonstrating HER2/neu IHC 1+ score. C, Example of gastric adenocarcinoma displaying HER2/neu IHC 2+ score. D, Gastroesophageal junction adenocarcinoma specimen demonstrating HER2/neu overexpression (IHC 3+) (HER2/neu IHC stain [HercepTest, Dako, Carpinteria, California], original magnifications ×400 [A through D]).