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Immunohistology of isocitrate dehydrogenase (IDH2) expression in different renal tumors. IDH2 is expressed in eosinophilic chromophobe renal cell carcinoma and oncocytoma, not in other renal carcinomas. (a) Normal kidney, (b) RCC: clear cell renal cell carcinoma, (c) eosinophilic RCC, (d) papillary RCC, (e) chromophobe RCC, (f) eosinophilic chromophobe RCC, and (g) oncocytoma.
