HRAS and cancer: Furthermore, our comprehensive immunolabeling analysis of protein expression in MB49 cancer cells showed the positivity of several other uroepithelial markers, such as uroplakins, keratins, and tight junctional, epithelial adherence junctional, and desmosomal proteins, but also of some mesenchymal markers, such as N-cadherin, vimentin, and H-ras.