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    Image of urothelium hyperplasia in the kidney from a male F344/N rat in a chronic study
    Kidney, Urothelium - Hyperplasia in a male F344/N rat from a chronic study. A focus of urothelial hyperplasia is present in the renal pelvis adjacent to the renal papilla.
    Image of urothelium hyperplasia in the kidney from a female F344/N rat in a chronic study
    Kidney, Urothelium - Hyperplasia in a female F344/N rat from a chronic study. Urothelial hyperplasia in the renal pelvis is associated with inflammation.