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Expression of KLF4 protein in human gastric adenocarcinoma and matched distant non-cancerous tissues by immunohistochemistry. (A) Strong KLF4 expression (+++) in distant non-cancerous tissues. (B) Positive KLF4 expression (++) in different stages of gastric cancer. (C) Weakly positive KLF4 expression (+) in different stages of gastric cancer. (D) Negative KLF4 expression (−) in different stages of gastric cancer. Original magnification, ×200.
