الفهرس 
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Abstract
The study included 50 cases which were examined by immunohistochemical technique and 20 from them subjected to ultrastructural study, these case were renal adenocarcinoma. The result was showed reactivity for epithelial markers such as the cytokeratins and the co - expression of epithelial marker (cytokeratin)with mesenchmal marker (vimentin)wasobserved.