Intralobar nephroblastematosis: precursor lesions of nephroblastoma in the Sprague-Dawley rat.

Abstract excerpt

Precursor lesions of spontaneous nephroblastoma (NB) in rats are here characterized for the first time, with a description of the progression of the tumor in prenatal, postnatal, and adult Sprague-Dawley rats (Upj:TUC[SD]spf.nb), which are genetically predisposed to the tumor. NB in the rat starts as a focal or multifocal interstitial accumulation of intensely basophilic immature (blastema) cells, invariably...

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