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Representative images of immunohistochemistry staining on advanced gastric cancer tissues with gene amplification. (A) CDK4 in patient CN30. (B) EGFR in patient CN41. (C and D) ERBB2 in (C) patient CN14 and (D) patient CN16. (E) Fibroblast growth factor receptor 2 in patient CN17. (F and G) KRAS in (F) patient CN20 and (G) patient CN42. (H) Met proto-oncogene receptor tyrosine kinase in patient CN38. (I) MYC in patient CN02. (J) PI3K catalytic subunit α in patient CN18. CN, chungnam.
