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Renal adenomas. A: rat 1, junction between adenoma and kidney cortex. Note the eosinophilic (necrotic) region top left; B: rat 2, tumorous kidney in situ; C: rat 2, excised tumorous kidney; D: rat 2, tumorous kidney in section showing renal papilla; E: rat 2, typical adenoma histopathology; F: rat 3, micro-adenoma in situ with central eosinophilic (necrotic) region.
