Fig. 1From: Dual block HER2 assessment increased HER2 immunohistochemistry positive rate in resected specimens of gastric cancer: a prospective multicenter clinical trial from ChinaExamples of cases with concordant or discordant HER2 results. A. A concordant case. Block1 (A1, A2): 3+; Block2 (A3, A4): 3+. B. A discordant case. Block 1 (B1, B2): 3+; Block 2 (B3, B4): 1 +Back to article page