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Immunohistochemical localisation of: (A) MMP-1; (B) MMP-2; (C) MMP-3; (D) MMP-9 in gastric cancers of intestinal type; and (E) MMP-1 in normal gastric epithelium (similar results were obtained with antibodies to the other MMPs). Strong immunoreactivity for each MMP is present in tumour cells (arrows) and is not present in normal gastric epithelium (original magnification ×120).
