Effects of 300 ppm BBN and/or 10 ppm arsenic on the histopathological changes of mouse bladder tissues.

<p>The bladder tissue slides were stained by H&E and then examined under a light microscope at 100× (A) and 400× (B) magnification. The pathological results shown here are normal (control), flat dysplasia (BBN), normal (DMA), normal (NaAsO₂), urothelial carcinoma, superficially invasive (BBN+DMA), urothelial carcinoma, deeply invasive (BBN+ NaAsO₂).