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. 2009 Nov 24;102(1):144–150. doi: 10.1038/sj.bjc.6605449

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Copyright © 2010 Cancer Research UK

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Representative immunohistochemical staining (original magnification × 100) of (A) absent MLH1 expression; (B) intact MLH1 expression; (C) epidermal growth factor receptor (EGFR) expression; and (D) vascular endothelial growth factor (VEGF) expression.