neoplasm
• 63% of mice develop superficial papillary bladder tumors from 10 to 26 months of age
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renal/urinary system
• 63% of mice develop superficial papillary bladder tumors from 10 to 26 months of age
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• at 3-5 months of age, the urothelium becomes thickened to 6-7 cell layers, indicating urothelial hyperplasia
(J:69251)
• urothelium becomes even more hyperplastic by 8 months of age, forming localized epithelial nodules
(J:69251)
• in mice that develop bladder papillary tumors, the intervening urothelium shows simple or nodular hyperplasia and mice that dont develop tumors exhibit simple and nodular urothelial hyperplasia
(J:69251)
• hyperplasia of the urothelium is seen as early as 3 months of age with increasing thickness at 12 months
(J:234236)
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