Tumor containing fragment number influences immunohistochemistry positive rate of HER2 in biopsy specimens of gastric cancer
2017
Background
HER2 assessment in biopsy specimens of gastric cancer (GC) is challenging because of the intratumoral heterogeneity. False negative results may be get because of limited biopsy material. The aim of this study is to explore how tumor-containing fragment number and biopsy specimen number affect HER2 immunohistochemistry (IHC) positive rate.
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