The Matched Pair Paraffin Tissue (MPPT) slides are designed for identifying tumor-specific/metastasis genes or proteins. Slices from normal and malignant tissues are mounted on each MPPT slide which can then be treated as a single histological slide for H&E staining, immunohistochemistry, or in situ hybridization. This format allows a rapid analysis of protein expression and localization across normal and cancerous tissue.